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Data will be made available on request.Despite the foreseen transformation that will take place in the next few years, the reduction in oil consumption will not reach 60 % until 2050, with an 80 % reduction when the energy model is zero emissions to the atmosphere [1]. Therefore, it is necessary to continue processing ... |
Different operating conditions of wet air oxidation and catalytic wet air oxidation have been studied for the treatment of highly concentrated methyldiethanolamine wastewater streams from amine units of acid gas recovery in petrol refineries. These units occasionally generate streams of high methyldi... |
Fossil crude is the major raw material used in the petrochemicals industry and the production of transportation fuels. However, the depletion of fossil reserves and the increase in the world's energy demand makes it difficult for the petrochemicals and transportation fuels industry to meet global demand. The more these... |
Na in Fe-based catalysts can be used to increase CO conversion and C2-C4 olefins and decrease the conversion of H2 and C1 selectivity, but its behaviour at different reaction temperatures is of importance in Fischer-Tropsch synthesis (FTS). The dependency of the C1 formation rate, the conversions of ... |
Data will be made available on request.The rational design of crystalline organic-inorganic hybrids such as metal-organic frameworks (MOFs) is an important challenge in materials science [1–3]. In the crystal engineering of extended coordination networks, N,N′-ditopic ligands such as pyrazine (pyz) and 4,4′-bipyridine ... |
The horizons of epoxidation and sulfoxidation processes may be expanded by developing new, efficient, and versatile catalysts. In the present work, three pyrazine-bridged molybdenum(0/VI)-based coordination network solids have been investigated for the epoxidation of olefins and the oxidation of sulf... |
The electrochemical oxygen evolution reaction (OER) is a key component of promising routes for clean energy, such as hydrogen production via water electrolysis, regenerative fuel cells, and electrochemical CO2 reduction (CO2RR) [1–6]. The OER, which involves four coupled electrons and protons, exhibits slow reaction ki... |
Introducing Ni in Ru oxide is a promising approach to enhance the catalytic activity for the oxygen evolution reaction (OER). However, the role of Ni (which has a poor intrinsic activity) is not fully understood. Here, a RuNiO
x
electrode fabricated via a... |
Carbon nanostructures show promise in fuel cell applications as a catalyst support. Much research is still being conducted in order to enhance the catalytic activity and selectivity and reduce the cost of catalyst preparation [1]. There are currently three main synthesis methods used to produce graphitic nanofibres GNF... |
The carbon nanostructures (CNS) were successfully grown during the chemical vapour deposition of ethene (C2H4) and hydrogen (H2) over a supported Ni0.362Fe0.64 catalyst. The temperature of the reaction was varied between 400 °C and 700 °C with different ratios of hydrogen and ethene (20/80, 50/50 and... |
The continuously growing demand for clean transportation fuels with the depletion of conventional petroleum reserves promotes an increase of poor and heavy oil upgrading. Therefore, it is significant to efficiently convert the residual oil into light fractions oil in the refining industry, in which the composition of r... |
In order to develop high-efficiency and low-cost catalyst for the slurry-phase hydrocracking of vacuum residue (VR), the catalyst supported on natural rectorite was prepared, and the effect of calcination modification of rectorite on the catalyst properties and performance was investigated. The suppo... |
Due to rising environmental concerns and challenges in satisfying future demand, the demand for renewable raw materials to replace petroleum oil-based products is significantly increasing [1]. It is one of the green synthesis choices that can help with long-term sustainability [2]. Vegetable oils (VOs), which currently... |
In this study, sulfated tin (IV) oxide solid acid catalyst was prepared for the epoxidation of Argemone mexicana oil (AMO) with peroxyacetic acid formed in-situ. The catalyst was synthesized using the chemical co-precipitation method and characterized. The effects of various epoxidation parameters on... |
With the rapid development of the global economy, industrialization and urbanization have caused the demand for fossil fuels to expand rapidly. Environmental warming and its associated environmental problems have caused widespread concern around the world; greenhouse gases in the atmosphere are the main cause of global... |
The process of discovering and developing new materials currently requires considerable effort, time, and expense. Machine learning (ML) algorithms can potentially provide quick and accurate methods for screening new materials. In the present work, the features of the metal organic frameworks (MOFs) ... |
No data was used for the research described in the article.
No data was used for the research described in the article.As a result of increasing public attention to the major environmental risks posed by the widespread use of fossil fuel sources, a deal was reached to transition to an energy system that relies on ... |
The theory and kinetics of the hydrogen evolution reaction (HER) on electrodeposited rhodium in acidic media (0.5 M H2SO4 solution) were looked into. An electrodeposition approach using direct current (DC) and pulse current (PC) was used to deposit rhodium on a stainless steel 304 (SS304) substrate. ... |
Amine compounds are indispensable intermediates in fine and bulk chemical industries for the synthesis of polymers, surfactants, pharmaceuticals, and agrochemicals [1–3]. Currently, a large quantity of industrial relevant amines, such as aliphatic amines, aromatic amines, and aminoalcohols, are manufactured from non-re... |
Al2O3-supported monometallic Ni, Co, and bimetallic Ni–Co nanocatalysts originated from layered double hydroxide precursors were synthesized by co-precipitation method, and used for the synthesis of useful 5-amino-1-pentanol (5-AP) and 1,5-pentanediol (1,5-PD) by reductive amination (RA) or direct hy... |
Alkynyl carboxylic acids are an important class of compounds owing to their existence in a variety of biologically active natural products [1]. The direct carboxylation of terminal alkynes with CO2 is a particularly useful synthetic method since CO2 is inexpensive, easily-available, non-toxic and thus can be considered... |
Developing efficient, inexpensive and robust heterogeneous catalysts for CO2 conversion is greatly important. In this study, a new stable copper(II)-based metal-organic framework [Cu(Fbtx)2Br2]
n
(denoted as CZU-7, CCDC-2165700, Fbtx = 1,4-bis(1,2,4-triaz... |
Data will be made available on request.Rising environmental issues and diminishing resources caused by increase in the usage of fossil fuels encourage researchers to find alternative sources of energy which is renewable, sustainable, and eco-friendly [1–4]. Biomass has significant potential as an alternative energy sou... |
The ever-increasing demand for substitute energy sources encourages the usage of biofuels as transportation fuel; however, the unstable properties and low calorific value of biofuels caused by high oxygen content limits their direct application. In this study, we report the upgrading of a model biofu... |
The root causes of a series of frontier hot issues, such as global climate anomalies, energy supply shortages, and ecological deterioration are the cliff-like decline of energy reserves and insufficient sustainable development [1]. As a clean energy source without supply constraints, The development of clean energy sou... |
The technical bottleneck of carbon materials as counter electrodes (CEs) lies in their limited electrical conductivity, extended ion diffusion paths, poor dispersion, and high contact resistance. Problem-oriented in-situ self-grown N-doped CNTs-coated Ni nanoparticles based on N-doped carbonaceous st... |
Data will be made available on request.The excessive consumption of single-use plastics in the age of consumerism has generated a staggering amount of global plastic production. The short service life of these highly durable plastics creates enormous pressure on municipal waste management systems. Experts estimate an i... |
Plastic pollution compromises the environment and human well-being, and a global transition to a circular economy of plastics is vital to address this challenge. Pyrolysis is a key technology for the end-of-life recycling of plastics, although high energy consumption limits the economic feasibility o... |
Hydrogen peroxide (H2O2), as a green and environment-friendly oxidant, is widely used in chemical, biological, environmental, and other industries. Currently, H2O2 production is mainly based on the anthraquinone autoxidation (AO) process. However, the AO process has complicated processes, high production costs, and an ... |
Nitrogen-doped porous carbon is potential support for directly synthesizing H2O2 from H2 and O2. Here, density functional theory (DFT) was used to study the effect of N-doped porous carbon on H2O2 directly synthesized. The theoretical calculation results showed that N-doped improved H2O2 productivity... |
A major challenge of our century is the substitution of fossil energy carriers by renewable resources. For chemical industry, the independence from crude oil and coal as carbon source is highly desirable. An alternative, ubiquitous, nontoxic, and sustainable carbon source is CO2, but the stable nature of the molecule m... |
Reverse Water-Gas Shift (rWGS) is among the reactions with the highest readiness level for technological implementation of CO2 utilization as an abundant and renewable carbon source, and its transformation for instance into synthetic fuels. Hence, great efforts are made in terms of further developmen... |
Influenced by the continuously growing ecological effects stemming from anthropogenic climate change, carbon dioxide (CO2) conversion and utilization have been receiving increasing interest from the scientific community.
1
,
2
Among all the different CO2 utilization processes, electrocatalytic CO2 reduction reaction... |
Electrochemical reduction of carbon monoxide has recently emerged as a potential approach for obtaining high-value products. Recent studies have shown that carbon monoxide can be electrochemically reduced to C2+ at high reaction rates, high selectivity, and inherently improved stability compared with... |
Atmospheric methane (CH4) from various sources, including biogases and natural gas leaks, is a significant greenhouse gas (GHG) with greenhouse effect much severer than carbon dioxide (CO2) [1–3]. The conversion of biomethane to hydrogen (H2) and useful solid carbon materials can substantially mitigate GHG emission by ... |
Catalytic decomposition of methane (CDM) to H2 and multiwalled carbon nanotubes (MWCNTs) was achieved by a nanocrystalline Cr-doped ferrite (FeCr) catalyst at 500 °C and atmospheric pressure with minor cofed CO. The exothermic Boudouard reaction increased the temperature and H2 from CDM at catalyst s... |
Electrocatalytic CO2 reduction reaction (CO2RR) is a promising way to convert CO2 into valuable carbon-containing fuels or chemicals at room temperature and atmospheric pressure [1–6]. The development of high-efficiency catalysts for CO2 reduction reaction has become a topical issue. According to the previous studies, ... |
Electrocatalytic CO2 reduction reaction (CO2RR) is one of the effective means to realize CO2 resource utilization. Among the high-efficiency metal-based catalysts, Cu is a star material profiting from its ability for CO2 reduction into valuable hydrocarbon products. However, due to the difficulty in ... |
The authors declare that the data supporting the findings of this study are available within the article and the supplemental information. The data and results supporting the present study are available from the lead contact upon request.Single-atom catalysts (SACs), comprised of isolated metal atoms anchored on suppor... |
Single-atom catalysts (SACs) have attracted tremendous attention owing to their unique intrinsic properties, while the facile synthesis, especially the direct transformation of metal salts into single-metal atoms, is still a huge challenge. Here we report a practical approach to access the large-scal... |
Non-edible lignocellulose is the most abundant, cheapest and fastest growing sustainable biomass resource, composed of three primary biopolymers: cellulose (a polymer of glucose), hemicellulose (a polymer mainly of pentoses) and lignin (a highly cross-linked polymer of substituted phenols) [1]. In order to produce valu... |
Conversion of 5-hydroxymethylfurfural (HMF) in water to the linear diketone derivatives 1-hydroxyhexane-2,5-dione (HHD) and 2,5-hexanedione (HXD) was investigated over a series of Beta zeolite-supported transition metal catalysts (Co, Ni, Cu, Ru, Pd). Their catalytic performance was tested in a batch... |
No data was used for the research described in the article.
No data was used for the research described in the article.With the development and progress of industry, air pollution is becoming more and more serious. The various kinds of pollution accumulated in the atmosphere cause harm to plants, river soils, buil... |
In this study, the Co(3-x)MnxO4@TiO2 core-shell catalysts prepared by sol-gel and external kinetic coating method were investigated for DeNO
x
by response surface methodology (RSM) using 3-factor with 5-level experiments. Compared with CoMn2O4 sample, the... |
In 2020, based on U.S energy consumption, the energy consumption summed up to 93 quadrillion Btu. Fossil fuels (petroleum, natural gas, and coal) accounted for 79% of total. Therefore, in order to meet up with the present and the future energy challenges, green diesel is the holy grail of future energy sustainability. ... |
This study critically examined the visibility of Asimina triloba oil for synthesis of biodiesel in the presence of ethanolic CaO–K2O –SiO2 base catalyst developed from residual wood ash powder. The oil was extracted using continuous extraction method. The physicochemical properties of the oil was det... |
As a clean and efficient energy source, hydrogen energy is pursued after by scientists [1]. The use of solar energy to conduct photoelectrochemical (PEC) catalysis is a highly prospect way to produce renewable energy [2]. Thus, many metal-based compounds are exploited for the realization of potent reaction efficiency [... |
The cobalt−carbonate (CoCi)/NiFeOOH double-layer co-catalyst was prepared on bismuth vanadate (BiVO4). Compared with the same type of electrode (Co−Pi/NiFeOOH/BiVO4 and Co−Sil/NiFeOOH/BiVO4), the photoelectrochemical (PEC) performance of the composite electrode presents the most excellent performance... |
Data will be made available on request.
Data will be made available on request.There is an increasing urgency to identify alternative energy sources to fossil fuels in order to meet the need to supply sustainable, clean energy as well as reduce greenhouse emissions to mitigate rising global temperatures, extreme a... |
Ruthenium nanoparticles stabilised by polymer immobilized ionic liquids catalyse the hydrolytic release of hydrogen from sodium borohydride. The composition of the polymer influences performance and ruthenium nanoparticles stabilised by an amine-decorated imidazolium-based polymer immobilised ionic l... |
Direct photocatalysis using plasmonic metal (gold, silver, copper, or aluminum) nanoparticles (NPs) under visible-light irradiation, also called plasmonic catalysis, has drawn significant interest in the last decade.
1–13
When plasmonic metal NPs are illuminated, they can efficiently absorb visible light due to the ex... |
Plasmonic catalysis has drawn significant interest recently, as the catalysis can be driven by visible light. Here, we show a new tactic to apply low-flux visible-light irradiation on plasmonic metal nanoparticles (NPs) to initiate catalysis with surface-bound transition-metal complexes under mild co... |
Levulinic acid (LA) is regarded as a representing chemical derived from lignocellulosic biomass[1–3]. GVL has been identified as a platform molecule and a promising option for producing value-added chemicals, which can be efficiently obtained through the hydrogenation of LA[4–9]. Besides, GVL can also be used as solven... |
Selective hydrogenation of Levulinic acid (LA) to γ-Valerolactone (GVL) is an important reaction to produce high value-added chemicals and fuels but remains a big challenge. Herein we reported a Ru/zeolite catalyst with Mn promotion, which exhibited excellent catalytic performance (yield: 98%) toward... |
H2 is considered an ideal clean energy carrier to replace traditional fossil fuels.
1–4
Electrocatalytic H2 evolution reaction (HER) from renewable energy by water splitting is a promising technology for efficient H2 production.
5–8
Various Earth-abundant metal-based catalysts with considerable HER activities have be... |
Promoting active and stable H2 evolution reaction (HER) on metallic Fe triad materials is important yet challenging. Here, we report a metallic Co catalyst modulated by vanadium oxide (VOx) clusters (denoted as Co(VOx)) for active alkaline HER activity. Systematic X-ray absorption spectroscopy (XAS) ... |
Data will be made available on request.Worldwide, there is a great desire to develop technologies for the efficient capture and conversion of carbon dioxide to fuels and chemicals, such as methanol [1–3]. Methanol is a carrier of carbon and hydrogen [4,5] and, as an energy carrier, it can be used directly as a fuel in ... |
The development of active catalysts for carbon dioxide (CO2) hydrogenation to methanol is intimately related to the creation of effective metal-oxide interfaces. In this work, we investigated how the order of addition of copper and zinc on zirconia influences the catalytic properties, the catalytic a... |
Metal-organic framework, denoted as MOF, is defined by the International Union of Pure and Applied Chemistry (IUPAC) as “a coordination network with organic ligands containing potential voids” [1]. Since the early 1990s, after the first scientific reports on the development of a new class of porous materials, there has... |
The aim of this study was to obtain and characterise thin metal organic frameworks layers supported on various metallic structured carriers such as FeCrAl plates and woven gauzes and NiCr foams. The thin layers of the metal organic frameworks were fabricated by in situ solvothermal deposition, optimi... |
Data will be made available on request.The progress in industrialization and urbanization have created different environmental pollution issues worldwide. Regardless of much developments, industrial units are one of serious threats to the environment. Continuous production waste and their discharging into water resourc... |
A series of Ni doped SrNixFe12-xO19 (x = 0.0, 0.05, 0.10, 0.15, 0.20, 0.25) hexaferrites were fabricated through facile micro-emulsion approach and doping content effect was investigated based on structural, dielectric, optical and photocatalytic properties. The prepared materials were characterized ... |
Data will be made available on request.In recent years, there has been a concerted effort to decrease the reliance of modern consumer products on the fossil fuel industry and the need for a sharp decline in their use to keep the temperature increase below 1.5 °C (Welsby et al., 2021). One of the main products from the ... |
The use of lignin to produce Benzene, Toluene and Xylene (BTX) is a promising pathway to strength the economic case, over the production of advanced bio-fuels alone. In this work, Ce, Na, Pd and Fe supported on zirconium oxide were evaluated for the ex-situ hydropyrolysis (HyPy)/hydrodeoxygenation (H... |
No data was used for the research described in the article.The development of catalytic converters for neutralization of exhaust gases has a history of almost 50 years and is constantly accompanied by an increasing stringency of emission standards for hazardous atmospheric pollutants CO, NOx and CHx [1]. To meet these ... |
1%Pd/CeO2-SnO2 catalysts with varying Ce/Sn ratio were synthesized by counter-precipitation followed by calcination in a wide temperature range. The catalysts with Ce/Sn < 3/1 possess high thermal stability after calcination up to 1000 °C while maintaining low-temperature activity in CO oxidation. Th... |
The catalysed formation of linear or isomerised aliphatic and aromatic hydrocarbons from the polymerisation of syngas (H2/CO mixture) is known as Fischer-Tropsch synthesis (FTS) [1]. FTS typically takes place under two environments: at high temperatures (330–350 °C) on an iron catalyst, and at low temperatures (180–250... |
To bridge the materials gap of single crystal work on the Fischer-Tropsch chain-growth mechanism, ethylene adsorption on a model skeletal cobalt catalyst was studied. Speciation and mobility of surface species were characterised using inelastic (INS) and quasi-elastic (QENS) neutron scattering. INS s... |
Over the past decades, the global environment has been rapidly deteriorated due to the increasing use of fossil fuels [1]. In the current age, it is highly anticipated to develop green energy devices. Rechargeable metal-air batteries are the environmental-friendly energy conversion devices with high performance and pra... |
As a promising electrochemical energy device, a rechargeable zinc-air battery (RZAB) requires cost-effective cathode catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Some earth-abundant transition metal oxides have certain levels of bi-functional ORR/OER catalytic ac... |
Shape-selective synthesis of ceria nanoparticles is of scientific and technological importance. Unique shape, size and surface defect-dependent ceria properties play a key role for various promising industrial applications including catalysis, electrochemistry, biology and optics [1–3]. Several strategies, such as hydr... |
Dehydrogenation is considered as one of the most important industrial applications for renewable energy. Cubic ceria-based catalysts are known to display promising dehydrogenation performances in this area. Large particle size (>20 nm) and less surface defects, however, hinder further application of ... |
Data will be made available on request.As a prototypical model probe reaction, catalytic oxidation of carbon monoxide (CO) has attracted much research attention for many years [1]. With the development of proton exchange membrane fuel cell (PEMFC) technology, removal of CO from hydrogen raw materials by preferential ox... |
Catalytic oxidation of CO is an effective route to eliminate the pollution of automobile exhaust. Tuning the fraction of exposed polar and non-polar crystal facets in ZnO provides an effective strategy to tailor metal-oxide interfacial active sites. Herein, the morphology of ZnO support was tuned to ... |
Data will be made available on request.Nowadays, a large number of environmental problems caused by excessive CO2 emissions from anthropogenic sources occur frequently, such as melting glaciers, rising sea levels, drastic climate changes, etc [1]. Therefore, it is essential to develop an effective approach to mitigate ... |
ICCU-methanation is a promising technology that would approach a carbon neutral cycle. In this paper, the feasibility of boosting the activity of the dual function material (DFM) 10Ni-16Na/Al2O3 through the joint presence of Na/Ca and the Ru incorporation is studied. Four DFMs are prepared by sequent... |
Biomass gasification is considered one of the most efficient routes to convert biomass feedstock into gaseous fuel through a partial oxidation process at high temperatures [1,2]. However, one of the main shortcomings of biomass gasification lies in the presence of tars in the product stream, which leads to fouling/clog... |
The performance of olivine, dolomite and γ-alumina primary catalysts was evaluated in the continuous tar elimination process in which toluene was selected as the biomass gasification tar model compound. Iron was incorporated into these catalysts in order to improve their catalytic activity. All the e... |
Fuel cells are electrochemical devices that efficiently convert the chemical energy of fuel and an oxidant into electricity. Specifically, SOFCs have advantages such as high efficiency for power generation and fuel flexibility, without the requirement for precious metal catalysts due to their high operating temperature... |
Ni alloys are examined as redox-resistant alternatives to pure Ni for solid oxide fuel cell (SOFC) anodes. Among the various candidate alloys, Ni–Co alloys are selected due to their thermochemical stability in the SOFC anode environment. Ni–Co alloy cermet anodes are prepared by ammonia co-precipitat... |
Nowadays, the increasing energy demand and environment pollution have stimulated the research for the utilization of clean energy, in which hydrogen is considered as one of the most potential energy carrier [1]. For hydrogen economy, the greatest challenge lies in the hydrogen storage. Compared with gas-state and liqui... |
Uniform-dispersed Ni nanoparticles (NPs) anchored on reduced graphene oxide (Ni@rGO) catalyzed MgH2 (MH-Ni@rGO) has been fabricated by mechanical milling. The effects of milling time and Ni loading amount on the hydrogen storage properties of MgH2 have been investigated. The initial hydrogen desorpti... |
Propylene is one of most important petrochemical products, as it could build huge variety of chemical commodities. In traditional petrochemical technology network, cracking technology undertake most supply of propylene. Nowadays, more than three-fourths propylene is produced as a by-product by naphtha steam cracking an... |
Dehydrogenation of propane (PDH) technology is one of the most promising on-purpose technologies to solve supply-demand unbalance of propylene. The industrial catalysts for PDH, such as Pt- and Cr-based catalysts, still have their own limitation in expensive price and security issues. Thus, a deep un... |
With the acceleration of industrialization, water pollution caused by the uncontrolled discharge of a large number of wastes and hazardous pollution into water has become a critical issue worldwide [1–3]. Various advanced oxidation processes (AOPs), including photocatalysis, electrocatalysis, Fenton-like oxidation, per... |
Single-atom catalysts (SACs), consisting of metal single atoms and supporting materials, have shown remarkable potential due to their ultrahigh catalytic performances, maximum atomic utilization and environmental friendliness. More recently, SACs have become ideal catalyst materials and have been ext... |
Data will be made available on request.An aqueous-phase bio-cured oil separated from the pyrolysis oil of woody biomass contains up to 60% of the carbon in the original biomass [1]. The aqueous fraction is composed of various oxygenated organic compounds, mainly small carbonyl compounds such as ketones, aldehydes, and ... |
A series of Pt–La/B38 catalysts were prepared for low-temperature isomerization of n-dodecane and the effects of La addition on the textural properties, metal dispersion, acid properties, and catalytic performance were investigated. La co-impregnated with Pt on B38 significantly reduced the Pt size a... |
Data will be made available on request.Wastewater generation in urban cities is increasing steadily, and more than 48 % of global wastewater is discharged without treatment [1]. Many technologies, including aerobic and anaerobic treatment systems, have been reported for wastewater treatment. However, these conventional... |
Microbial fuel cells (MFCs) have enormous potential to treat wastewater and reduce the energy demands of wastewater treatment plants while generating electricity using active microorganisms as biocatalysts. However, the practical application of MFCs is limited by the low power density produced, mainl... |
Nitrogen-containing heterocycles are ubiquitous scaffolds of many natural products and are being widely used in the field of pharmaceuticals [1–4]. Among them, quinazolinone derivatives are of utmost interest for a wide cross-section of chemists due to their remarkable bioactivities (Fig. 1
) [5–8]. They exhibit a rang... |
An environmentally benign highly atom-economic protocol for the construction of the CC bond has been developed under catalyst- and solvent-free conditions. This protocol involves the efficient coupling of 2-methyl quinazolinones with 3-(trifluoroacetyl)coumarins for the access of quinazolinone deriva... |
Air pollution has always been a hot issue of public concern; substantial works have been applied to air pollution control for decades [1]. Volatile organic compounds (VOCs) have extensive sources, mainly including industrial and traffic exhaust emissions. The discharged pollutants such as benzene, toluene, formaldehyde... |
Photothermal catalysis realizes the synergistic effect of solar energy and thermochemistry, which also has the potential to improve the reaction rate and optimize the selectivity. In this review, the research progress of photothermal catalytic removal of volatile organic compounds (VOCs) by nano-cata... |
1. Introduction
Rice husk is a lignocellulosic biomass consisting of cellulose, hemicellulose, and lignin [1]. Cellulose can be converted into energy sources in the form of platform chemicals such as 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA) [2]. Cellulose conversion to 5-HMF and LA has been widely carri... |
Conversion of delignified cellulose from rice husk biomass, and model compounds of cellobiose and glucose to levulinic acid (LA) over hierarchical Mn3O4/ZSM-5 catalyst was carried out using a household microwave method, and then compared to the established conventional thermos-reaction method. The hi... |
With the increasing energy consumption and the challenge of the global climate problem, it is urgent to develop novel and efficient energy conversion and storage technologies [1–3]. In recent years, a lot of electrochemical technologies, which convert sustainable electric energy into chemical energy, have been develope... |
Developing efficient oxygen evolution reaction (OER) electrocatalysts is of great importance for sustainable energy conversion and storage. Ni-based catalysts have shown great potential as OER electrocatalysts, but their performance still needs to be improved. Herein, we report the multiple metal dop... |
In the past 170 years, human activities have been responsible for almost all of the rapid increase in CO2 emissions, which has been linked to global climate change and ocean acidification (Figure 1
A).
1
,
2
Strategies such as CO2 capture and catalytic conversion have been proposed to mitigate CO2 emissions. Among t... |
Bimetallic-derived catalysts have played a pivotal role in many industrially important catalytic processes. In recent years, simultaneously upgrading the greenhouse gas CO2 and underutilized ethane (SU-CO2Et) has represented a promising route for producing value-added chemicals, such as synthesis gas... |
According to statistics reported by International Energy Agency (IEA) and the American Energy Information Administration (EIA), the global energy consumption increases by 50 quadrillion Btu every year [1]. From another perspective, the intensive dependence on fossil fuels for electricity generation has absolutely alter... |
A propitious binary catalyst composed of Pt and Cu which were electrodeposited simultaneously onto a glassy carbon (GC) substrate was recommended for the formic acid (FA) electro-oxidation reaction (FAOR); the principal anodic reaction in the direct FA fuel cells (DFAFCs). The simultaneous co-electro... |
Subject
Chemical Engineering: Catalysis
Specific subject area
Development of catalyst for green transformation of waste feedstock's to valuable chemicals
Type of data
Figures
How the data were acquired
XRD (Bruker D8 Discover), TGA (SDT Q600, T.A. Instruments), NH3–TPD (Micromeritics Autochem-2920), Pyrid... |
This article presents experimental data on the techniques used for the characterization of Pd-Al2O3 supported on activated biochar (2Pd-5Al/ABC) catalyst. The reported data is collected as a part of the research on the 2Pd-5Al/ABC catalyst used for lignin hydrogenolysis [1]. The data on X-ray powder ... |
Access to safe and clean drinking water has become a major source of contention and concern across the world. People in most parts of the world are having difficulty getting sufficient drinkable water. Water contamination has become more and more of a concern. Water pollution is a serious issue in developing countries ... |
Every day, the risk of water pollution grows. According to the World Health Organization (WHO), approximately half of the population of poor countries suffers from health problems linked to chemically or microbially contaminating drinkable water. Here in the present study, powder of taro-rhizome was ... |
Polyhydroquinolines are an imperative cluster of 1, 4-dihydropyridine (1,4-DHP) nucleus containing heterocycles, that have fascinated much consideration because of their potent pharmacological and biological activities [1–6]. Polyhydroquinolines are also distinguished as calcium channel antagonists and platelet aggrega... |
Carboxylic acid functionalized imidazolium based novel acidic ionic liquid [CEMIM][MSA] was synthesized using economically feasible raw materials under very mild condition. The cost effective and sustainable synthesis of polyhydroquinoline and 6-unsustituted dihydropyrimidinone derivatives in green m... |
The Ni–MoO2 heterostructure was synthesized in suit on porous bulk NiMo alloy by a facile powder metallurgy and hydrothermal method. The results of field emission scanning electron microscopy (SEM), field emission transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) revea... | |
Electrochemistry plays an essential role in the revolution from the current fossil-fuel-dominated energy market to a green, affordable, and sustainable energy economy because of its great potential to convert and store electricity from renewable energy sources [1]. For instance, hydrogen generation by electricity provi... |
Computational approaches to describe catalysts under electrochemical conditions are steadily increasing. Yet, particularly the theoretical description of nanostructured catalysts, which have the advantage of a high surface area or unique electronic properties through refined synthetic protocols, is s... |
No data was used for the research described in the article.CN and CC coupling reaction has gained immense interest recently as they find importance in synthesis of fine chemicals, natural products, pharmaceuticals, agrochemicals and functional materials [1]. In drug discovery, CN and CC coupling reactions are generally... |
CN cross coupling reaction is very important in synthesis of pharmaceuticals, natural products, agrochemicals, fine chemicals and functional materials. Traditionally, palladium or copper metals are used for CN coupling reaction. As palladium is expensive, we developed cobalt immobilized carbon-based ... |
Cellulose, the most abundant polymer in nature, has vital importance for modern industry [1]. Cellulose is biocompatible, biodegradable, bioadhesive, and nontoxic properties using in many applications such as food, cosmetics, detergents, textile, and pharmaceutical areas [2]. On the other hand, chitosan deriving from c... |
A novel nanocomposite including cellulose, chitosan and Ni/NiO was fabricated from barely wastes, shrimp wastes, and Calotropis procera, respectively. It was characterized by TEM, SEM, TGA, DTA, FT-IR, BET, EDAX, and elemental analysis. 5–25 nm of Ni/NiO were dispersed on chitosan and cellulose. The ... |
Core-shell particles is a class of particles containing a core and a shell, which can be either the same or different materials that can be separately identified (Hayes et al., 2014). Their properties can be adjusted by modification of a material with a variety of another materials through surface coating techniques, s... |
Core-shell particles is a type of materials that consist of an inner core structure and an outer shell made from different components. They have been employed as a catalyst due to their unique properties, arising from the combination of the core and shell materials. In addtion, the properties of the ... |
In the current energy scenario, the production of heat, power and biofuels from biomass has become of major interest. In this line, gasification is a key technology for the large-scale exploitation of biomass. However, the development of biomass gasification is conditioned by the efficient conversion of the feed and th... |
The performance of Fe/olivine catalysts was tested in the continuous steam gasification of sawdust in a bench scale plant provided with a fountain confined conical spouted bed reactor at 850°C. Olivine was used as catalyst support and loaded with 5wt%Fe. The activity and stability of the catalyst was... |
Single-atom catalysts (SACs), created by decorating isolated metal atoms or mononuclear metal complexes on appropriate supports, have received tremendous and continuous attention in chemistry and materials science.
1–9
In principle, SACs provide 100% metal dispersion on the surface and thus maximize the metal utilizat... |
Artificial photocatalytic energy conversion represents a highly intriguing strategy for solving the energy crisis and environmental problems by directly harvesting solar energy. The development of efficient photocatalysts is the central task for pushing the real-world application of photocatalytic re... |
With the growing attachment to the environmental issues, the production of clean gasoline has become a major assignment in petroleum refining industry. To this end, the strict gasoline quality standards have been formulated by countries all over the world, limiting the contents of olefins and aromatics in gasoline. The... |
Hierarchical SAPO-11 molecular sieve (ACS-11) was successfully synthesized employing the Al2O3/carbon (Al2O3/C) composite obtained through the pyrolysis of Al-based metal-organic framework (Al-MOF-96) as mesoporogen. Unlike other carbon-based mesoporogens with strong hydrophobicity, the Al2O3/C inter... |
Second generation biomass is a renewable feedstock with a lower carbon footprint than fossil crudes and is thus a promising alternative raw material to produce fuels and chemicals [1–3]. One of the interesting biomass-derived platform molecules is furfural (Scheme 1
), which can be produced on an industrial scale by de... |
The gas-phase hydrodeoxygenation (HDO) of furfural, a model compound for bio-based conversion, was investigated over transition metal phosphide catalysts. The HDO activity decreases in the order Ni2P ≈ MoP > Co2P ≈ WP ≫ Cu3P > Fe2P. Nickel phosphide phases (e.g., Ni2P, Ni12P5, Ni3P) are the most prom... |
Data will be made available on request.Supercritical water gasification (SCWG) has drawn considerable attention in recent years as a clean and renewable synthetic natural gas (bio-SNG) production technology. As water acts as the solvent and reactant in these conditions, no drying step is required to convert biomass fee... |
Ru/CNF catalysts of different Ru nanoparticle (NP) sizes (0.9–2.7 nm) were assessed for their performance in continuous supercritical water gasification (SCWG) of glycerol. A structure sensitivity of Ru was demonstrated, with high initial turnover frequencies (TOF) for Ru NPs smaller than 1.2 nm. Dea... |
Data will be made available on request.As the only renewable carbon source, the development of biomass energy is conducive to reducing fossil-fuel energy depletion, mitigating greenhouse gas emissions, and promoting sustainable development [1,2]. Gasification is one of the most effective mechanisms for the utilization ... |
To improve the conversion efficiency and reduce the CO2 emissions associated with the reforming of biomass tar to syngas, photothermal catalysts were prepared in this study through various impregnation methods. Photothermocatalytic CO2 reforming (PTCR) of benzene as a tar model compound, was conducte... |
Fuel cells, which directly convert the chemical energy stored in fuels to electrical energy, have been widely investigated and applied in many variations since the first hydrogen fuel cell was invented in 1838. Direct ethanol fuel cells (DEFCs) are promising candidates for portable power applications. Ethanol has an en... |
Direct ethanol fuel cell (DEFC) as a promising device for converting chemical energy to electricity has been paid ever-increasing attention. However, the slow kinetics of ethanol electrooxidation at an anode hinders the application of DEFCs. Although Pt is the best catalyst among all the pure metal c... |
No data was used for the research described in the article.Friedel–Crafts alkylations are important reactions for attaching alkyl chains to an aromatic ring and hence is of considerable industrial and pharmaceutical significance [1]. It proceeds through the electrophilic attack of an aromatic ring by an alkylating agen... |
Nitrogen, sulphur and zirconium doped cobalt ferrites prepared by coprecipitation method were evaluated as catalysts for the production of cumene from benzene and isopropyl alcohol. The catalytic efficiency of cobalt ferrite towards the reaction increased due to the doping by zirconium and non-metals... |
In the current transition period towards green energy, the implementation of carbon capture and utilization (CCU) strategies is one of the biggest challenges to achieve the goal of decarbonization and tackle climate change. In this scenario, the technological development of efficient routes for the large scale conversi... |
The effect of the ZrO2 content on the performance (activity, selectivity, stability) of In2O3–ZrO2 catalyst has been studied on the hydrogenation of CO2/CO mixtures. This effect is a key feature for the viability of using In2O3–ZrO2/SAPO-34 tandem catalysts for the direct conversion of CO2 and syngas... |
The huge emission of carbon dioxide (CO2) due to the excessive consumption of fossils has caused severe problems, so the CO2 issue has attracted much attention all over the world [1–3]. As a renewable and environmentally friendly C1 resource, the capture and utilization of CO2 has attracted tremendous interest because ... |
The transformation of carbon dioxide (CO2) into fuels and chemicals is an interesting topic, which has been paid much attention in recent years. The materials with specific functionalities are highly required for CO2 capture and conversion, which have been widely investigated. As an emerging material... |
Azo dyes are identified with one or more azo bond linkage (-N=N-) having the most prominent use of 70% among over 2,000 species of synthetic dyes [1–4,70]. Several studies have been carried out on the properties of these dyes which reveal their unique simplicity in synthesis, excellent fastness rating, high solubility,... |
Azo dyes in industrial textile and dye effluent (5–30%) have become irresistibly recalcitrant and toxic to both treatments and the environment respectively. Global concerns about the persistent nature of these dyes and the limitation of the conventional treatment currently in place have led to this c... |
The oxidation of carbon monoxide (CO) is a key reaction in automotive and industrial pollution control (Wu et al., 2001). Due to its relative simplicity, it has been the subject of numerous fundamental studies into heterogeneous catalytic processes (Szanyi et al., 1994). The reaction is traditionally carried out over n... |
The kinetics of carbon monoxide oxidation over alumina supported nickel oxide was studied using a mechanistic approach to model development and identification. Langmuir-Hinshelwood and Eley-Rideal reaction schemes, together with an alternative scheme were investigated, using low temperature, differen... |
The oxidation of alcohols is considered a benchmark reaction for the development of new catalysts [1]. Besides this, the oxidation of primary and secondary alcohols to their respective aldehydes and ketones is a common laboratory procedure. These reactions traditionally employ toxic oxidants such as chromium VI salts (... |
The oxidation of primary and secondary alcohols to their respective aldehydes/ketones is one of the most important reactions in fine chemistry due to the industrial application of these products. Based on this, a large number of new catalysts and oxidants have been tested using this reaction as a cat... |
catalyst to oil weight ratiofinal boiling pointfluid catalytic crackingheavy cycle oilinitial boiling pointlight cycle oilliquefied petroleum gasesmunicipal solid wasteplastic pyrolysis oilmean squared errorvacuum gasoilcorrelation coefficientmolar concentration (mol cm-3)apparent activation energy (kJ mol-1)certain lu... |
The kinetics of the catalytic cracking of plastic pyrolysis oil (PPO) over three FCC (fluid catalytic cracking) equilibrium commercial catalysts has been modeled. The PPO comes from the fast pyrolysis of high-density polyethylene (HDPE). The cracking runs have been carried out in a laboratory-scale r... |
As energy crisis and environmental pollution are two major enemies for mankind, developing new energy sources and realizing carbon neutrality have become an urgent task in the 21st century. Hydrogen is considered to be the ultimate form of energy in the future because of its advantages such as high calorific value, pol... |
Magnesium-based hydrogen storage materials are considered as one of the most promising candidates for solid state hydrogen storage due to their advantages of high hydrogen capacity, excellent reversibility and low cost. In this paper, Mg91.4Ni7Y1.6 and Mg92.8Ni2.4Y4.8 alloys were prepared by melting ... |
Data available on request from the interested.In this era, it is becoming imperative to make a transition towards renewable energies. However, most renewable energy sources have an intermittent nature, precluding their adoption and utilization at their full potential [1]. One energy vector that has the potential to ove... |
Green-hydrogen generation has become a focus for research due to its promising future as an energy vector. In this regard, one topic that has not been explored in depth, is the corrosion of catalytic layers under on/off operation in alkaline media during oxygen evolution reaction (OER) on the anode. ... |
Steelmaking, one of the world’s key industrial sectors, is highly energy-, and thus, carbon-intensive. The iron and steel sector directly accounts for 2.6 Gt of CO2 emissions annually, corresponding to about 7% of the global CO2 emissions [1]. Modern installations are reaching their limits in terms of efficiency improv... |
The use of steel-work off-gases as CO2 source for methanol production is a promising strategy for the decarbonization of the steel industry. In this work, we show that typical impurities, namely S, N, Na, Ca and Fe, reduce the activity of a commercial CuO/ZnO/Al2O3 catalyst by blocking part of the Cu... |
The effects of global warming have prompted the search for technological alternatives to mitigate its impact and thus avoid the increase in greenhouse gas emissions, with CO2 and CH4 representing an important part of the total amount emitted into the atmosphere. Among these alternatives, the dry reforming of methane (D... |
In this work, a hibonite-type Ni/La-hexaaluminate (Ni/LHA) synthesized from an industrial waste is used and compared as catalyst in the dry reforming of methane (DRM) at 973 K. The structure, catalytic behavior, and stability during a run time of at least 50 h of three Ni-catalysts obtained from two ... |
With the rapid development of the automobile industry, the pollution of the environment by automobile exhaust is becoming increasingly serious [1,2]. SOx generated by incomplete combustion of sulfur compounds in gasoline not only is the main source of acid rain but also can significantly reduce the conversion efficienc... |
In this paper, a hydrangea-like Bi2WO6 material was first synthesized by a hydrothermal method. Then, as a carrier, a NiO-Bi2WO6 composite photocatalyst was successfully synthesized by the hydrothermal method and high-temperature calcination and applied to studying the removal of benzothiophene (BT) ... |
The widespread presence of organic pollutants in wastewater poses a serious threat to ecosystems and public health, many micropollutants are extremely toxic even at low concentrations and require effective removal [1–3]. However, many difficult-to-remove organic pollutants, especially antibiotic aromatic compounds, are... |
Antibiotic pollution in aqueous solutions seriously endangers the natural environment and public health. In this work, Mo-doped transition metal FeCo–Se metal aerogels (MAs) were investigated as bifunctional catalysts for the removal of sulfamethazine (SMT) in solution. The optimal Mo0
... |
Biomass gasification has attracted considerable attention as a technology to reduce environmental pollution and to face the steady increase in the world heat and power consumption. Gasification converts solid biomass into biosyngas, a gaseous mixture of hydrogen, carbon monoxide, methane, carbon dioxide, alongside nitr... |
Tar compounds have been defined as Achilles’ heel in biomass gasification. Catalytic reforming solves problems caused by tar by converting them into H2 and CO. Most of the research has focused on secondary and tertiary tar reforming while some information on primary tar can be derived from bio-oil re... |
Over the past few decades, heterogeneous catalysis in industrial processes has received more attention due to the many advantages related to green chemistry principles. The reusability and the ease of separation and saving catalytic process efficiencies are some of the advantages of the improved ecotechnological proces... |
This paper reports on the first case of the recyclable catalysts of ZnO/SiO2 prepared from salacca leaf ash as a source of silica for biodiesel production. The catalysts were prepared using a hydrothermal synthesis method, and the catalyst was utilized for biodiesel conversion from rice bran oil. Phy... |
Data will be made available on request.It is widely accepted that hydrogen, a clean and sustainable energy vector, is considered the ideal alternative of fossil fuels. Within the actual framework of the socioeconomical and environmental situation, green hydrogen will play a crucial role for a clean energy transition pr... |
We have optimized the H2 production by methanol thermo-photocatalytic reforming in the gas phase using Cu/TiO2 catalyst by tuning metal loading. Metal co-catalyst has been deposited by means of chemical reduction deposition. We have stated that thermo- and thermo-photocatalytic process leads to a not... |
In order to deal with the increasing global energy shortage and serious climate issues caused by the usage of fossil fuels, technologies for production of renewable and clean energy on the terawatt scale are urgently required in the near future, with a required minimum production of 10 terawatt (TW) of renewable energy... |
Molecular catalysts possess numerous advantages over conventional heterogeneous catalysts in precise structure regulation, in-depth mechanism understanding, and efficient metal utilization. Various molecular catalysts have been reported that efficiently catalyze reactions involved in artificial photo... |
Data will be made available on request.Nanomaterials based on oxides (nanostructure and nano dispersed) are a diverse class of materials in terms of electronic structure, physical, chemical, and electromagnetic properties. The application of metal oxide nanomaterials and nano composition based on them is becoming incre... |
A first attempt was made to synthesize a Ni-SnO2-TiO2 nanocomposite by a one-pot simple synthetic method. A [Ni(im)6]Cl2 precursor complex is preferably adsorbed on the solid surface forming nanocomposite: complex adduct, it simultaneously becomes a surface species (Ni-SnO2-TiO2). In this investigati... |
The hydrogenation of aromatic nitro compounds is one of the most important applications of precious metal powder catalysts. Amongst these, one of the most used processes is the hydrogenation of dinitrotoluene (DNT) to toluenediamine (TDA), with more than 1 million tons produced globally on an annual basis. TDA is an in... |
Cobalt, copper, and nickel ferrite spinel nanoparticles have been synthesized by using a combination of sonochemical treatment and combustion. The magnetic nanoparticles have been used as supports to prepare ~4 wt% palladium catalysts. The ferrites were dispersed in an ethanolic solution of Pd(II) ni... |
As one of the 100 most important chemicals in the world, hydrogen peroxide (H2O2) is a valuable and environmentally friendly oxidizing agent with a wide range of applications, ranging from the provision of clean water to the synthesis of valuable chemicals as well as being a potential energy carrier.
1–3
The current i... |
The electrochemical oxygen reduction reaction in acidic media offers an attractive route for direct hydrogen peroxide (H2O2) generation and on-site applications. Unfortunately there is still a lack of cost-effective electrocatalysts with high catalytic performance. Here, we theoretically designed and... |
Lignin is a complex three-dimensional natural polymer that is obtained from lignocellulose along with cellulose and hemicellulose [1–3] and contains the monomer units of p-coumaryl (H units), coniferyl (G units), and sinapyl alcohols (S units) [4–7]. Unlike the formation of aromatic compounds from methane and acetylene... |
Lignin is a natural polymer contained in lignocellulose and is a potential feedstock for the production of phenolics or small aromatic molecules. However, lignin depolymerization is typically performed using low lignin concentrations and insufficiently active catalysts, which hinders industrial appli... |
Alternatives to traditional oil-derived compounds, like biorenewable compounds, are necessary due to their environmental benefits and due to limitations on fossil fuel resources [1,2]. Several processes have been developed for biodiesel production because it is a renewable, biodegradable, eco-friendly, and nontoxic fue... |
Catalysts based on zirconia and alumina-supported tungsten oxides (3–18 wt% W) with a small loading of platinum (0.3 wt% Pt) were selected to study the influence of W loading, support type, and preparation methods on the hydroisomerization of n-dodecane. The alumina- and zirconia-supported catalysts ... |
Fluid catalytic cracking (FCC) is an important process for the conversion of crude oil into valuable products including fuels, lubricants, and precursors for making other products. This importance is evidenced by the fact that there are more than 430 FCC units worldwide today [1–3]. First used commercially in 1942 in B... |
Nickel, a common contaminant in crude oil, deposits on Fluid Catalytic Cracking (FCC) catalysts and induces unwanted dehydrogenation reactions. These lead to an increase in hydrogen and coke which inhibits the FCC unit from reaching its optimal operation. Modern catalyst technologies can include nick... |
In the last few decades, titanium dioxide (TiO2) has been used as an alternative catalyst for the sterilization process of several pathogenic bacteria. The photo-catalyst performance of TiO2 is proven to be more effective in degrading several types of organic matter contaminants than that of the conventional method of ... |
This study reports the application of FeCuNi nano-alloy doped TiO2 synthesized via the sol-gel method as an antibacterial with a sterilization rate greater than 95% under ultra-violet (UV) irradiation. The performance was characterized using X-ray diffraction (XRD), thermal analysis (TG-DTA), scannin... |
The hydrogenation of 2,4-dinitrotoluene (DNT) is an important industrial process to produce 2,4-toluelendiamine (TDA). TDA is an intermediate in the production of toluene diisocyanate (TDI), which is one of the main components in the manufacture of polyurethane (PU) [1]. In the catalytic hydrogenation of DNT, carbon-, ... |
Maghemite particles were synthesized by using a combined combustion method and sonochemical step. Maghemite was used as carrier to prepare supported Pt and Pd catalysts after deposition via a sonochemical step. The catalysts were immediately ready to be used (metals were catalytically active) for the... |
Methanol is an essential commodity to produce key chemicals and intermediates, and an appealing energy carrier [1–3]. Its thermocatalytic production (CO2 + 3H2 → CH3OH + H2O) from captured CO2 and renewable H2 or CO2-rich feeds obtained via biomass gasification is an attractive approach to effectively combat global war... |
Catalysts for CO2-to-methanol are typically evaluated in a single-pass regime using pure CO2streams. In a practical process however, CO shall be present as a feed impurity or as a recycled byproduct. Herein, the sensitivity to CO was evaluated on In2O3 catalysts in bulk, supported, or metal-promoted ... |
With the increasing demand for energy supply and the ever-worsening climate change, the development of sustainable technologies, such as the solar-driving catalysis process, to generate clean energy and chemicals has been recognized as the most promising way to address this pressing global issue. Photocatalysis has att... |
With the ever-increased greenhouse effect and energy crisis, developing novel photocatalysts to realize high-efficient solar-driven chemicals/fuel production is of great scientific and practical significance. Recently, single-atom photocatalysts (SAPs) are promising catalysts with maximized metal dis... |
Since Al
3
Ni
2
intermetallic compound (IMC) is utilized in the preparation of Raney-type Ni catalysts, it is considered as an industrially important material and has been highlighted in Intermetallic Materials Processing in Relation to Earth and Space Solidification (IMPRESS) project [1–13]. Another import... |
Considering its application in developing Raney-type Ni catalysts and in metal surface coatings, the study on the growth behavior of Al
3
... |
Heterocyclic compounds have gained great attention in organic synthesis. Five-membered heterocyclic compounds containing one heteroatom such as pyrrole, furan and thiophene are the most prominent scaffolds in organic chemistry having wide-spread biological activities [1]. Especially, pyrroles have an essential role in ... |
The first zinc-catalyzed simple and convenient protocol for the synthesis of N-substituted pyrroles through a modified Clauson-Kaas reaction without co-catalyst, ligand, base and solvent has been described. N-substituted pyrroles were prepared from various aniline derivatives and 2,5-dimethoxytetrahy... |
With the rapid development of society, the excessive consumption of fossil fuels and the dramatically increasing of energy demand have caused serious environmental pollution and energy crisis. The development of renewable energy and energy conversion technologies is considered to be an effective way to solve these two ... |
Single atom catalysts (SACs) are constituted by isolated active metal centers, which are heterogenized on inert supports such as graphene, porous carbon, and amorphous carbon. The thermal stability, electronic properties, and catalytic activities of the metal center can be controlled via manipulating... |
The increase in atmospheric CO2 level has created a foremost environmental concern, as it is known to participate in the global climate change [1]. Sustainable solutions for the decreasing of atmospheric CO2 requires the use of fossil-free energy sources as well the development of new chemical technologies that can con... |
An amine bisphenol ligand with an ammonium iodide group in the pendant arm (H2L) reacts with V, Mo and U oxometal precursors to form oxovanadium(V), dioxomolybdenum(VI) and dioxouranium(VI) species, respectively. In methanol solutions, vanadium(V) and molybdenum(VI) form 1:1 complexes [VO(OMe)(L)]I·2... |
Energy crisis and environmental pollution hinder the sustainable development of society. People have realized the significance of clean energy. Hydrogen energy is widely concerned and researched because of its high combustion efficiency, rich resources, clean and recyclable characteristics. Hydrogen energy is regarded ... |
In this paper, PtAuFe/C composite catalyst and Pt/C catalyst are prepared by sodium borohydride direct reduction method. The physical properties of the catalysts are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The electrocatal... |
Hydrogen is a perfect way to store, transport, and convert energy for a comprehensive and clean energy concept. One of the main challenges that need to be overcome, before hydrogen economy is implemented worldwide, is safe and efficient hydrogen storage. Metal hydrides are promising materials to fulfil the target for h... |
Body-centered cubic (BCC) alloys are considered as promising materials for hydrogen storage with high theoretical storage capacity (H/M ratio of 2). Nonetheless, they often suffer from sluggish kinetics of hydrogen absorption and high hydrogen desorption temperature. Carbon materials are efficient hy... |
activated carboncarbon blackcarbon felt/graphite feltcarbon nanofibercarbon nanotubeelectrochemically exfoliated graphenehierarchical porous carbonsmesoporous carbonmultiwall carbon nanotubeordered mesoporous carbonreduced graphene oxidereticulated vitreous carbonreed straw activated carbonspectrographically pure graph... |
Hydrogen peroxide (H2O2) is an efficient oxidant with multiple uses ranging from chemical synthesis to wastewater treatment. The in-situ H2O2 production via a two-electron oxygen reduction reaction (ORR) will bring H2O2 beyond its current applications. The development of carbon materials offers the h... |
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