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Data will be made available on request.Fossil fuels are essential building blocks in the petrochemical industries for producing materials such as plastics, synthetic fibres, rubbers, lubricants, detergents, and solvents (Keim, 2010; Speight, 2011). However, their non-renewable nature poses a sustainability risk, prompt... |
Pyrolysis oil from oil palm biomass can be a sustainable alternative to fossil fuels and the precursor for synthesizing petrochemical products due to its carbon-neutral properties and low sulfur and nitrogen content. This work investigated the effect of applying mesoporous acidic catalysts, Ni–Mo/TiO... |
Biomass represents a sustainable alternative carbon source compared to fossil resources like oil, gas and coal [1–3]. Considering the limited reserves of these fossil resources, growing research efforts are being devoted to the development of efficient catalytic systems for biomass valorisation into biofuels and biobas... |
Bimetallic Ni-Co catalysts supported on nanosized CeO2 were prepared and investigated as heterogeneous catalysts for the transfer hydrogenation between glycerol and various H2 acceptors (levulinic acid, benzene, nitrobenzene, 1-decene, cyclohexene) to selectively produce lactic acid (salt) and the ta... |
No data was used for the research described in the article.The efficient emission control of unburned methane in power plants and vehicles that use natural gas as a potential bridge fuel in the transition toward renewable energy is of vital importance [1,2], given that this pollutant is strongly involved in the greenho... |
In this work bimetallic Ni catalysts supported over Co-Al2O3 and monometallic Co-Al2O3 and Ni-Al2O3 catalysts were examined for the complete oxidation of methane. With a 30 % total metallic loading, the samples were synthesized by a sequential precipitation route. All samples were characterized by ni... |
Brunauer–Emmett–TellerBarret–Joyner–HalendaCold gas efficiencyCassava rhizomeEnergy dispersive spectroscopyEquivalence ratioHigher heating valueInternational Union of Pure and Applied ChemistryLower heating valueMobil Composition of Matter No. 41Relative pressureScanning electron microscopeSimulated flue gasX-ray powde... |
In this work, torrefaction of cassava rhizome (CR) under nitrogen gas (
N
2
... |
Utilization of CO2 is currently a hot topic in catalysis due to the chance to decrease anthropogenic CO2 emissions on the one hand and to recycle it as a C1 source in exchange to fossil fuels on the other hand. So called power-to-gas (PtG) and power-to-liquid (PtL) technologies enable chemical storage of surplus energy... |
The raise of regenerative but unsteadily produced energy demands a highly flexible way to store the energy for time periods when less energy is produced than consumed. In the current study, it is investigated if catalysts based on environmentally more attractive and less hazardous to health Fe might ... |
Data will be made available on request.Due to the growing concern of the greenhouse gas reduction and the discovery of surplus shale gas reservation, the dry reforming of methane (DRM) reaction has attracted widespread attention [1–7]. The dry reforming of methane (DRM) is a prospective process to convert two major gre... |
Dry reforming of methane simultaneously achieves several sustainability goals: valorizing methane-activating carbon dioxide while producing syngas. The catalyst has an enormous influence on the process viability by controlling activity, selectivity, and stability. A catalyst with uniform-sized Ni-Fe ... |
Ethylene (C2H4) is regarded as the most important petrochemical platform molecule to produce diverse commodity chemicals such as polyethylene, ethylene oxide, vinyl chloride, and polystyrene, with global demand of 153 million tons in 2016 and net added demand of about 5.2 million tons every year (Xu, 2017). Nowadays, i... |
Large-scale shale gas exploitation greatly enriches ethane resources, making the oxidative dehydrogenation of ethane to ethylene quite fascinating, but the qualified catalyst with unique combination of enhanced activity/selectivity, enhanced heat transfer, and low pressure drop presents a grand chall... |
An increase in the consumption of fossil-based resources has initiated the exploration of biomass conversion to produce high-value chemicals and fuels [1,2]. Furan-based chemicals, owing to the abundant biomass sources, have received considerable attention as valuable alternatives to chemicals obtained from fossil reso... |
2,5-Bis(hydroxymethyl)furan (BHMF) is a high-value, bio-based, rigid diol that resembles aromatic monomers for the production of different polyesters. In this work, a carbonnanotubes (CNTs)-supported nickel catalyst (Ni/CNTs)was prepared and used for the selective hydrogenation of 5-hydroxymethylfurf... |
The catalytic hydroconversion of n-paraffins is an important reaction to improve the quality of diesel and gasoline in the oil-refining industry (Zhou et al., 2022). Hydroisomerization of light alkane can produce high-octane fractions for gasoline blending with non-aromatic hydrocarbons to meet increasingly stringent e... |
The non-noble metal modified sulfated zirconia was found easy to deactivate. Herein, highly active and highly stable non-noble core-shell Ni–S2O8
2−/Al2O3@ZrO2 catalysts (Ni-SA@Z-x, x = Al content in wt%) have been successfully prepared and investigated for n-pentane isomerizatio... |
Data will be made available on request.The combination of green hydrogen with biogenic carbon dioxide feedstocks generates synthetic fuel with low carbon footprint [1]. So far, two main synthetic fuel routes have been extensively proposed: Power-to-Gas (Sabatier), which produces almost pure CH4; and Power-to-Liquid (Fi... |
A new catalytic route for the production of a high-calorie synthetic gas (40–60 MJ/Nm3), composed by C1-C4 hydrocarbons, has industrial interest for gas applications and locations with high heating requirements. In this work, a series of bimetallic Co-X (X = Ni, Pt and Fe) catalysts supported on La2O... |
Conversion of low-cost biomass-derived oxygenates, such as glycerol (C3H6O8), to hydrogen (H2) is a promising route for making eco-friendly renewable H2 fuels, being able to increase the share and availability of clean energy while lowering the greenhouse gas (GHG) emissions [1]. Glycerol is commonly produced as an org... |
Valorisation of crude glycerol via steam reforming, i.e., SRG, is a promising method to produce sustainable hydrogen. However, catalyst deactivation under harsh SRG conditions is still a main challenge which hinders the further development of practical SRG. In this work, the encapsulated Ni catalyst ... |
Data will be made available on request.In heterogeneous catalysis, the interaction between (metal) nanoparticles and a support is a crucial factor for the catalytic performance. Stabilizing the nanoparticles is the main reason to use a support, resulting in a high particle dispersion during synthesis [1] and preventing... |
The interaction between metal nanoparticles and a support is of key importance in catalysis. In this study, we demonstrate that the introduction of oxygen- or nitrogen-containing surface groups on a graphite nanoplatelet support influences the performance of nickel supported catalysts during CO2 hydr... |
Water splitting by electrolysis (2H2O → O2 + 2H2) provides a possible path for the conversion of clean, renewable energy to H2 fuel to power human civilization [1,2]. The efficiency of water electrolysis is partially limited by the high kinetic overpotential associated with driving the oxygen evolution reaction (OER) [... |
Rational design of efficient, earth-abundant, and durable electrocatalysts to accelerate the oxygen evolution reaction (OER) is critical for hydrogen ion by water electrolysis. In the present work, nanostructured Ni12−x
Fe
x
P5 (x = 1.... |
n-Hexane from petroleum and gasoline industries is a typical volatile organic compound (VOC), which has been widely used as polymerization reaction media, cleaning agent, and a solvent in industries, with the high volatility and high toxicity at low concentrations. The emissions of n-hexane can affect human health and... |
Developing the alternative supported noble metal catalysts with low cost, high catalytic efficiency, and good resistance toward carbon dioxide and water vapor is critically demanded for the oxidative removal of volatile organic compounds (VOCs). In this work, we prepared the mesoporous chromia-suppor... |
Biomass is a valuable source to produce liquid fuels; however, the bio-oils obtained from it have high oxygen and water contents and require further upgrading [1]. Hydrodeoxygenation (HDO) is a preferred process to decrease the oxygen content for bio-oil upgrading [2]. HDO reactions involve the presence of a catalyst u... |
This work proposed a controllable synthesis of Ni-Mo catalyst supported inside multi-wall carbon nanotubes (CNTs). The results indicate that Ni improved the β-Mo2C formation and markedly promoted the benzofuran (BF) hydrogenation and hydrodeoxygenation activity of the catalysts. The synergistic inter... |
Data will be made available on request.
Data will be made available on request.The classical Hirao reaction involves the P–C coupling between vinyl- or arylbromides and dialkyl phosphites performed in the presence of palladium-tetrakistriphenylphosphine (Pd(PPh3)4) as the catalyst [1,2]. Shortly after the inventio... |
After surveying the most important results described on the Pd(0)/Pd(II)- and Ni(II)-catalyzed P–C couplings of bromobenzene and diethyl phosphite or diphenylphosphine oxide, the simple Hirao reactions catalyzed by different Cu(II) salts were investigated. In these instances, the more reactive iodobe... |
Coal tar, as a main by-product in the process of coal pyrolysis, contains a large number of aromatic hydrocarbons (mainly bicyclic and tricyclic aromatic hydrocarbons) (Ardakani and Smith, 2011; Hodoshima et al., 2003; Liang et al., 2009; Zhao et al., 2010). The aromatics in low temperature coal tar can be converted in... |
Ni2P supported catalysts exhibit high catalytic activities in hydrogenation reaction, of which the particle sizes of Ni2P active phases are the key influential factor. This research focus on the effect of chelators on the size of Ni2P particles over wrinkle silica nanoparticles (WSNs) by introducing ... |
Data will be made available on request.Carbon nanofibers (CNFs) have attracted considerable attention in a wide variety of applications, including biosensing [1], energy storage [2], water purification [3] and catalysis [4]. CNFs are cylindrical nanostructures that consist of stacked graphene sheets of various sizes an... |
The effect of catalyst materials and different process parameters on the growth of carbon nanofibers (CNFs) has been widely investigated. Typically, an adhesion metallization is required together with the catalyst to secure adequate attachment to the surface. The interactions within this multilayer s... |
Data will be made available on request.Within the renewable energy portfolio, biomass is a key resource for mitigating climate change and reducing reliance on fossil fuels [1]. Lignin is a major component of biomass and has the potential to be converted into hydrocarbon fuels and value-added compounds [1]. Fast pyrolys... |
Catalytic hydrodeoxygenation (HDO) is a critical technique for upgrading biomass derivatives to deoxygenated fuels or other high-value compounds. Phenol, guaiacol, anisole, p-cresol, m-cresol and vanillin are all monomeric phenolics produced from lignin. Guaiacol is often utilised as a model lignin c... |
The utilization of natural gas has become more challenging as many resources contain high amounts of CO2. The Natuna Sea is the largest natural gas resource in Indonesia, with 46 TSCF proven reserves consisting of 71 mol% CO2 and 28 mol% of CH4 [1]. To date, the natural gas reserve in the Natuna Sea has not been utiliz... |
Dry reforming of methane (DRM) is considered a promising reforming technology that converts natural gas in the Natuna Sea into synthesis gas, which can be further utilized to produce beneficial chemicals such as olefins, alcohols, and liquid hydrocarbons. However, the challenges in commercializing th... |
Reducing greenhouse gas emissions and the consumption of fossil fuels are necessary to limit the ongoing climate change. Hence, renewable energy systems such as wind or solar power plants are a suitable solution to provide sustainable energy. One drawback of these technologies is the weather dependency. To overcome th... |
More than
75
%
of today’s H2 production is based on reforming processes using heterogeneous catalysts. In addition, catalysts are needed for hydro... |
Data will be made available on request.The increase in crude oil prices and its negative impact on the environment such as air pollution, ozone depletion, and climate change has led to the growing interest in the use of renewable and less-pollutant resources [1,2]. Synthetic gas (or syngas), a mixture of CO and H2 is r... |
Till date, oxidative ethanol steam reforming use Ni-based catalysts to produce syngas. However, Ni catalysts suffer from easy deactivation due to the coke formation at low temperatures. Therefore, oxidative ethanol dry reforming is a promising method and was investigated over 10 %Co/Al2O3 catalyst du... |
Brunauer–Emmett–TellerBarret–Joyner–Halendaaverage pore diameterFourier transform infraredspecific surface area obtained by BET methodspecific surface area of microporesThermal conductivity detectorThermogravimetric AnalysisTemperature programmed desorptionpore volumeMicropore volumeBiomass as a renewable energy source... |
In this work, agricultural biomass waste (maize) was used as raw material in a pyrolysis-gasification process with the presence of nickel-loaded zeolites, CaO and Al2O3. Henceforward, the reusability and the deteriorating effect of the catalysts are important to be analysed, therefore the catalysts w... |
Data will be made available on request.
Data will be made available on request.There are several serious disadvantages to use fossil fuels. These are especially worrying for the environment (global warming) and for the energy independence of nonproducing countries. The transport sector is one of the main consumers... |
Heterogeneous catalysts based on alumina-supported tungsten oxides (15 wt% W) with different loadings of nickel (0.5, 1, 2, 4, 6, 8 and 10 wt% Ni) were selected to study the influence of Ni loading on the hydroisomerization of n-dodecane. The catalysts were prepared by applying the wetness impregnati... |
In recent years, hydrogen has gained increasing attention as an alternative to fossil fuels, enabling net zero targets to be realized. As stated in the 2021 UK Hydrogen Strategy [1], the UK is aiming for a total of 10 GW of low-carbon hydrogen production capacity by 2030 to decarbonize vital industries and provide clea... |
Blue hydrogen production by steam methane reforming (SMR) with carbon capture is by far the most commercialised production method, and with the addition of a simultaneous in-situ CO2 adsorption process, sorption-enhanced steam methane reforming (SESMR) can further decrease the cost of H2 production. ... |
Sustainable renewable energy devices, such as water splitting, fuel cells, and metal-air batteries, have attracted immense attention.
1–4
However, their large-scale application, such as in Zn-air batteries, has been severely hindered by the intrinsic sluggish kinetics of the oxygen evolution reaction (OER) and oxygen ... |
The principle of how the active sites of catalysts match the reaction intermediates has long been sought after. Herein, we report a theory-guided atomic design and fabrication strategy of a C-based catalyst with diatomic Fe–Ni and N,P co-doping for the oxygen evolution reaction (OER). The configurati... |
Data will be made available on request.
Data will be made available on request.Plastic waste pollution is one of the most serious environmental issues worldwide today. A sustainable waste management strategy is necessary to overcome this problem. One of the most investigated methods for plastic waste treatment is ... |
Pyrolysis and in-line catalytic decomposition of plastic waste were performed for the production of carbon nanomaterials (CNMs) and hydrogen. A new catalyst, Ni-UGSO (Nickel-UpGraded Slug Oxide), was used in a continuous mode, and its activity was compared to that of a typical Fe/Al2O3 catalytic form... |
Data will be made available on request.The extensive utilization of fossil fuels for daily life and industrial applications has led to significant emissions of greenhouse gases (GHGs) including carbon dioxide (CO2) and methane (CH4) [1]. CO2 or dry reforming of methane (DRM), which converts both GHGs into syngas (H2 an... |
Solar-driven photothermochemical dry reforming of methane (PTC-DRM) is a promising technique to produce syngas using greenhouse gases (CO2 and CH4). In this work, Ce-substituted LaNiO3, i.e., La1−xCexNiO3 perovskite catalysts were synthesized for PTC-DRM reaction under concentrated sunlight. At 700 °... |
No data was used for the research described in the article.Over the last decades, the increasing incidence of Diabetes Mellitus in both developing and affluent countries [1] has further highlighted the need for new approaches to glucose sensing. Currently, most of the commercially available products are still based on ... |
Nickel-based catalysts are currently the subject of intensive study in the search for novel electrode materials for non-enzymatic glucose sensing. Their strong activity towards glucose electrooxidation and intrinsic resistance to chloride poisoning makes these catalysts ideal candidates for the devel... |
Data will be made available on request.
Data will be made available on request.Growing concerns about international dependencies and environmental impacts of fossil fuel sources are driving a national transition towards more sustainable and renewable energy sources, including bio-derived liquid fuels (Schiffer, 20... |
There is growing interest in the substitution of expensive noble metal catalysts with low-cost earth-abundant metals in applications targeting biofuels production from waste organic feedstocks. Here, nickel (Ni) catalysts supported on zirconium dioxide (ZrO2), both with and without copper (Cu) as a c... |
As important intermediates, alicyclic amines are widely used in chemical (anticorrosion products) and pharmaceutical industry. They are normally synthesized from the corresponding aromatic amines [1]. Precious metal-based catalysts [1–12] were mainly studied, while Co- and Ni-based catalysts were also reported [13–16].... |
Ru/MgO-Al2O3 catalysts (2-6 wt% Ru) were prepared by a two-step co-precipitation method and were found to be highly active and selective for the hydrogenation of aromatic amines to alicyclic amines. Hydrogenation of toluene in the presence of triethylamine (TEA) was used as a probe reaction to explai... |
With the decrease of light crude oil supplies, there is rising concern about converting heavy oil into transportation fuels. As a poor-quality heavy oil, fluid catalytic cracking (FCC) slurry oil is mainly used as a blending component for producing marine fuel oil [1,2]. To improve air quality, strict emission regulati... |
Mesoporous NiMoAl catalysts with boron phosphate (BPO4) modification were synthesized through the complete liquid-phase method. X-ray diffraction (XRD) analysis evidenced the presence of BPO4-AlOOH mixed support in these BPO4-modified NiMoAl samples. The total amount of acid sites declined, but the s... |
The rapid economic and societal development seen in recent decades has led to a dramatic increase in energy consumption worldwide. Fossil fuels such as coal and oil have been our major energy sources since the first industrial revolution; however, they are not clean energy sources. The combustion of fossil fuels releas... |
Converting CO2 to fuel is a promising strategy to mitigate the greenhouse effect and achieve ‘carbon neutrality’. Photothermal catalysis has been widely used for CO2 reduction because it effectively reduces the apparent activation energy of the reaction and provides milder catalytic conditions as wel... |
No data was used for the research described in the article.Biopolymers are gaining traction in plastics because of their inherent biodegradability and unique characteristics for particular applications. Biopolymers may be taken from nature, biosynthesized by live organisms, or chemically synthesized from biological com... |
Hydrogen and liquid fuel production from biopolymer waste, such as cellulose dissolved in phenol, was investigated using in-situ pyrolysis-catalytic steam reforming conditions. Developing a sustainable method for the thermal cracking of such biopolymers still faces difficulties due to the catalyst st... |
Heterogeneous catalysis systems have created attention due to availability of number of catalysts or the use of diverse substrates such as silica, sepiolites, zeolites, and polymers for metal complex immobilization [1,2] associated with numerous advantages including effective recovery of the catalysts by filtering, reu... |
In this present work, synthesized tetranuclear Ni complex is anchored on thiol functionalized Na–Y zeolite. Structure, phase integrity, shape, thermal stability and the existence of functional groups are identified by using different analytical techniques like powder XRD, N2 adsorption-desorption, Fo... |
Dyes are mainly used in the plastics, textile, paper, rubber, wood, and food industries [1]. The presence of colorant materials in streams is not only aesthetically unpleasant but can also cause problems for the environment by elevating toxicity, oxygen demand levels, and lagging the photosynthetic phenomena by reducin... |
In this study, the performance of Ni-FSM-16 and TiO2-FSM-16 photocatalysts in phenol red removal was explored. The XRD, FE-SEM, and BET tests were used to characterize the catalysts. All experiments were performed at ambient temperature and under UV (20 W). The parameters including dye concentration ... |
Data will be made available on request.CH4 reforming with CO2 (also known as dry reforming of methane, or DRM) has attracted increasing interest in building a sustainable carbon-neutral society, as it can convert two main greenhouse gases into higher value fuels and chemicals while alleviating the negative effects of g... |
Dry reforming of CH4 (DRM) using a plasma-enabled catalytic process is an appealing approach for reducing greenhouse gas emissions while producing fuels and chemicals. However, this is a complex process that is influenced by both catalysts and discharge plasmas, and low energy efficiency remains a ch... |
The sustainable production of hydrogen through electrocatalytic water splitting is a potential pathway for obtaining clean energy due to its environmental friendliness and high energy conversion efficiency [1,2]. Effective electrocatalysts are necessary for high efficient hydrogen evolution reaction (HER). Pt-group cat... |
Hydrogen evolution reaction (HER) through electrocatalysis using cost-efficient and long-term stable bimetallic phosphide as electrocatalyst holds a great promise for sustainable clean energy technologies. In this study, self-supported nanoporous Ni-Co-P (np-Ni-Co-P) catalyst with amorphous structure... |
Hydrogen as a clean and renewable energy carrier has attracted more and more interests owing to the perspective vision of future hydrogen energy society [1]. However, conventional hydrogen production technology based on coal, petroleum or natural gas are still needed to cope with resource exhaustion, environmental poll... |
Hydrogen production by steam reforming of ethylene glycol (EG) at 300 °C was investigated over SiO2 and CeO2 supported Pt–Ni bimetallic catalysts prepared by incipient wetness impregnation methods. It was observed that impregnation sequence of Pt and Ni can affect the performance of catalysts apparen... |
The abrupt climate changes caused by global warming and the non-stoppable ever-increasing energy consumption are complex challenges humankind must urgently deal with. The extreme dependence of up-to-date energy production technologies on non-renewable sources had been of negative effect on environmental and energy secu... |
Ni/CaO-La2O3 catalysts generated by in situ reduction of La1−xCaxNiO3 perovskite systems (x = 0; 0.15; 0.30 and 0.50) were prepared and evaluated in steam reforming of acetic acid under steady state conditions. The objective of this work was to study the effect of calcium content towards activity and... |
To tackle the problems of energy crisis and environmental pollution, clean and renewable energy sources are required to replace the fossil fuels widely used to generate electricity. As an alternative energy sources, hydrogen is becoming an important part of the future energy system because of its high energy density an... |
A simple and effective method for preparing a non-metallic ion-doped nickel-supported catalyst is reported. Using economical and recyclable fibre raw materials as carriers, nickel-supported catalysts were prepared by adsorption and reduction at room temperature. The nanoparticles dispersed and anchor... |
The development of sustainable, clean, and environmentally friendly energy is becoming increasingly important to address the growing threat of energy exhaustion and greenhouse gas emissions that contribute to dangerous climate change (Kılınç and Sahin, 2018; Chen et al., 2011). Hydrogen (H2) is a potential alternative ... |
Nickel nanoparticles (Ni NPs) supported on Poly(vinylidene fluoride-co-hexafluoropropylene) nanofibers (PVDF-HFP NFs) were successfully synthesized through electrospinning and in-situ reduction of Ni2+ salts into the surface of PVDF-HFP NFs to form metallic Ni NPs@PVDF-HFP NFs. Different percentages ... |
In recent years, interest in lignocellulosic biomass valorization into value-added chemicals and fuels has gained importance due to decreasing fossil raw materials [1–3]. Along with hemicellulose and cellulose, lignin is one of the three most important biopolymer components of lignocellulosic biomass and comprises an a... |
The conversion of lignocellulosic biomass into value-added chemicals and biofuels has been attracting the attention of researchers in recent years. Lignin is an abundant, natural polymer and a major component of lignocellulose comprising an aromatic structure with ether linkages, methoxy-, and hydrox... |
The composite Ni/Al2O3-SiC catalyst was designed and synthesized for hydrogen production from propane partial oxidation. Through the composite of high thermal conductivity SiC and porous solid acid Al2O3, it improved the shortcoming of sintering and inactivation of high-temperature reaction for Ni-ba... | |
Production of waste is rapidly increasing and World Energy Council expected a waste daily production of more than 6 million tons by the year 2025 [1]. In order to convert the organic fraction of the waste into energy, several techniques can be used like direct combustion, pyrolysis, gasification, transesterification, f... |
Biogas, a renewable energy source, is primarily composed of CH4 and CO2. It is a promising alternative to fossil fuels and can be used directly for electricity production as well as heat generation via combustion. Concerns about climate change and a greater emphasis on renewable energy sources have r... |
Due to the advantageous property and long lifetime, plastics are important materials in our society. The yearly plastics consumption is around 300 million tonnes in worldwide and about 60 million tons in the EU [1]. Most of the waste polymers are landfilled (27%) and valorised with energy recovery (41%) in Europe [1–3]... |
This work is focussing to the thermo-catalytic batch pyrolysis of contaminated real municipal plastic waste using different catalyst mixtures in their different ratios: Ni/ZSM-5, red mud, Ca(OH)2 and Ni/SAPO-11, red mud, Ca(OH)2. The effect of the catalysts to the pyrolysis oil properties and the in-... |
Hydrogen (H2) has significant advantages as an energy vector compared to petroleum or other conventional fossil fuels, although currently there are problems that must be solved, associated with its production, storage, and transportation [1]. Formic acid (FA) is a non-toxic renewable biomass material that can be used a... |
Ni, Cu and Ni-Cu catalysts supported on high surface area graphite were synthesized by incipient wet impregnation. Also, the effect of doping the graphite support with alkali oxides (Li, Na and K) was studied. The catalysts were tested in the formic acid decomposition reaction to produce hydrogen. Th... |
World production of waste plastic grows year by year, as a consequence of the huge demand for plastic materials in every commercial field [1]. However, a significant proportion of waste plastics end up into the waste stream leading to many environmental problems. Plastics in the ocean are of increasing concern due to t... |
Three Ni/Al2O3 catalysts prepared by co-precipitation, impregnation and sol-gel methods were investigated for the pyrolysis-steam reforming of waste plastics. The influence of Ni loading method on the physicochemical properties and the catalytic activity towards hydrogen and carbon monoxide productio... |
No data was used for the research described in the article.Greenhouse gases such as CO2 and CH4 absorb and emit radiant energy, causing global warming [1]. The concentration of CO2 in the atmosphere has been rising despite nature’s effort to curb it via the carbon cycle. Human activities have substantially contributed ... |
This study investigated the performance of supported Ni catalysts in the utilization of greenhouse gases like CO2 and CH4 via dry reforming. The support SBA-15 was impregnated first with Sc at different loadings (0.5, 1, and 3 wt.%) and then with Ni (5 wt.%). The catalysts were first tested up to 8 h... |
No data was used for the research described in the article.Extensive use of fossil fuels along has conducted to a rapid and continuous increase of CO2 concentration in the atmosphere [1], up to 420 ppm in April 2022, while preindustrial levels were of 278 ppm (in ca. 1750) [2]. Therefore, there is an increasing interes... |
The hydrothermal reduction of CO2 captured in aqueous solutions using metal reductants is a promising novel approach that achieves high yields of conversion and high selectivity, but it presents the limitation of the high temperatures needed for the reaction to take place. In this work, experiments c... |
The hydroxides and oxyhydroxides of Ni are among the most extensively studied electrocatalysts because of their high activity in alkaline media [1,2], for instance, in the electrochemical oxidation of alcohols [3,4], aldehydes [5–10], glucose [11–14], hydrogen peroxide [15], water splitting [16–20], etc. There have bee... |
The main challenge with electrocatalysis is finding low-cost electrocatalysts that can work efficiently to oxidize the HCHO. Here, we propose a mechanism for the voltammetric formation of a highly active, structurally disordered β-Ni(OH)2/β-NiOOH redox pair on the surface of electrodeposited Ni thin ... |
The deterioration of the global environment and depletion of fossil fuel resources have driven the global community to search for alternative, sustainable, and eco-friendly energy resources [1]. Among the available energy resources, H2, which has attracted significant attention as a clean resource, is extensively utili... |
H2 is highlighted as a sustainable energy resource, and mainly produced by steam reforming of fossil fuels, which emit greenhouse gases. Marine biomass can be an alternative because of high productivity and carbon neutrality compared to terrestrial biomass. In this work, we studied bio-oil from Sacch... |
In 2018, the global carbon dioxide emissions increased by 2.7% [1]. The challenges of meeting the growing need for electricity and transport fuel of the world must be dealt with a substantial decrease in CO2 emissions [2]. Hydrogen, which can replace fossil fuels such as coal, diesel, gasoline, and natural gas, may uni... |
Syngas production via dry reforming of methane was conducted over 5 wt%Ni + xWO3/γ-Al2O3 (x = 1, 3, 5, 7, or 9 wt%) catalysts at 700 °C and ambient pressure for 7.5 h in a tubular fixed-bed reactor. Textural, morphological, and catalytic properties were investigated in relation to the weight percent ... |
Data will be made available on request.An attractive route towards CO2-free production of hydrogen is the thermal catalytic decomposition of methane. In addition to H2 formation, carbon nanomaterials, such as fibers, single or multiwalled carbon nanotubes, or other carbon nanostructures can be grown as a potentially va... |
An alternative route towards COx-free production of hydrogen is the thermal catalytic decomposition of methane. In addition to hydrogen, valuable carbon nanomaterials can be formed. Carbon nanofiber formation from methane decomposition over carbon supported NiCu catalysts was studied in-situ using a ... |
Nitrophenols (NPs) are widely presented as precursors, intermediates, or by-products in various industries, such as pharmaceutical, agrochemical, fine-chemical, dye, etc. [1, 2]. Due to the electron withdrawing effect of nitro group (-NO2) and benzene ring, as well as the conjugate effect, NPs are always stable molecul... |
Conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) through advanced reduction process is important to lower the hazardous risk of 4-NP, which requires the development of highly efficient catalyst. Herein, we proposed a novel strategy to fabricate nickel phosphide/carbon composite for 4-NP red... |
The oxygen evolution reaction (OER) is a crucial half reaction to realize efficient hydrogen production via water electrolysis [1–20]. To date, tremendous efforts have been devoted to designing advanced OER catalysts in low price and high earth-abundance, and current studies indicate that a pre-oxidation process with s... |
Designing advanced electrocatalysts for the oxygen evolution reaction (OER) is of great significance owing to its crucial role in facilitating the production of clean hydrogen energy via water splitting. To date, it has been widely accepted that a pre-oxidation process with the in-situ generation of ... |
The discovery of carbon-based nanostructures, such as carbon fibers, carbon nanotubes (CNTs), carbon microtubes (CMTs), and carbon nanodots, appears to be beneficial for practical applications. In term of CNTs and CMTs, the structures have similarities particularly in hollow, tubular, and single- or multi- walled which... |
Objective
As a hydrocarbon material, cellulose could be used as precursor in synthesizing carbon micro-structure (CMTs), and this study aims to investigate the potential use of cellulosic material from kapok randu as a precursor in synthesizing carbon-based structures.
... |
Under the trend of dramatic population growth [1], rapid urbanization [2], as well as expansion of industrial and agricultural production scale [3], the issues of water pollution and scarcity are stern day after day and have become critical environmental issues facing the worldwide in the 21st century. Moreover, subjec... |
Microbial fuel cell (MFC) is one synchronous power generation device for wastewater treatment that takes into account environmental and energy issues, exhibiting promising potential. Sluggish oxygen reduction reaction (ORR) kinetics on the cathode remains by far the most critical bottleneck hindering... |
Hydrogen (H2) is becoming increasingly important as a future fuel compared with fossil fuels because of its advantages of clean and renewable energy generation (Dresselhaus and Thomas, 2001; Turner, 2004). Electrochemical water splitting provides an effective approach for H2 production. Water splitting consists of the ... |
Although electrochemical water splitting is an effective and green approach to produce oxygen and hydrogen, the realization of efficient bifunctional catalysts that are stable in variable electrolytes is still a significant challenge. Herein, we report a three-dimensional hierarchical assembly struct... |
There is an urgent need to develop highly efficient catalysts and technology to obtain butyl alcohol with their production based on local secondary resources of significant national economic importance.Butyl aldehyde, a limiting aliphatic aldehyde of the acyclic series, is obtained by the oxosynthesis of hydrocarbon ra... |
The processes of heterogeneous catalytic hydrogenation of carbonyl-containing compounds into the corresponding alcohols mostly occur under rather harsh conditions; therefore, catalysts and optimal parameters that facilitate the process under mild conditions need to be selected. New ways of synthesizi... |
In recent years, CO2 hydrogenation is the most important process because it not only reduces global warming but also produces value-added products [1–5]. The hydrogen obtained from water electrolysis using renewable and sustainable energy sources such as solar, wind, geothermal, biomass etc. can be used to hydrogenate ... |
A series of 5 wt% NiO-xP-Al2O3 with different phosphorus loading contents (x = 0, 5, 15 and 20 wt%) were prepared by a modified sol-gel method. A significant promotional effect of phosphorus on NiO-Al2O3 in CO2 hydrogenation is observed. All the catalysts reach the highest conversion at 600 °C with 6... |
With the increasingly serious global environmental degradation and energy crisis, renewable energy techniques have attracted considerable attention of scientific researchers [1–4]. Among numerous technologies for energy storage and conversion, over water splitting, which can achieve by green photocatalysis or electroca... |
Cu2O is an ideal template material for the preparation of transition metal hydroxide/oxyhydroxides with oxygen evolution reaction (OER) enhanced catalytic performance. Here, inspired by Pearson's principle, Cu2O wires were prepared and used as a sacrificial template to prepare Ni(OH)2·0.75H2O hollow ... |
The metal nanoparticles (MNPs) take over the growing interest in the catalytic processes. MNPs are characterized by a high surface-to-volume ratio providing a large number of active sites (surface atoms) per unit area [1]. The presence of large number of reactive surface atoms enhances the efficiency of the catalytic p... |
Graphene oxide was blended with poly(vinyl alcohol) film as a solid support for nickel nanoparticles as a dip catalyst. Simple preparation steps were followed avoiding the use of hazardous materials and/or any surface treatment. Graphene oxide plays the key role in the proposed catalyst by cross-link... |
The rapid technological development in recent decades has led to an increase in the population in the world, which in turn has caused a noticeable increase in the consumption of fuels such as jet fuel, gas oil, and gasoline, which contain organic sulfur compounds (OSCs).) and are a major cause of air pollution (Choi et... |
In this study, oxidative desulfurization of dibenzothiophene (DBT) with an H2O2-acetic acid system whereas the catalyst used is molybdenum oxide supported on activated carbon (AC). The effect of loading nickel oxide as a promoter as well as the impact of catalyst dosage and the initial sulfur concent... |
Fuel cell technology is a potent alternative for the production of clean energy. The main fuels which are widely used to power fuel cells are hydrogen, methanol, methane, formic acid or hydrazine. Of particular interest are low temperature fuel cells that are powered by clean hydrogen giving electricity, water and heat... |
Monometallic copper, nickel and bimetallic Pd(Rh)-Cu(Ni) catalysts supported on a binary oxide containing various content of ZrO2 and Al2O3 were prepared by impregnation method. Their physicochemical and catalytic properties in oxy-steam reforming of methanol reaction (OSRM) were extensively investig... |
Due to increasing evidence of global warming in the present century, scientists at the UN Intergovernmental Panel on Climate Change have reached a consensus for reduction of greenhouse gas emissions, especially carbon dioxide, to the atmosphere [1–8]. This has also prompted steering committees of industrialised countri... |
Today, bi - reforming of methane is considered as an emerging replacement for the generation of high-grade synthesis gas (H2:CO = 2.0), and also as an encouraging renewable energy substitute for fossil fuel resources. For achieving high conversion levels of CH4, H2O, and CO2 in this process, appropri... |
With the rapid development of the global economy, energy crisis and environment issues have become increasingly prominent. Carbon dioxide (CO2) is a primary greenhouse gas, while it could also be a valuable carbon source. In recent years, electrochemical CO2 reduction reaction (ECR) has received considerable attention ... |
The design of highly efficient catalysts for electrochemical reduction CO2 (ECR) to value-add chemicals and fuels is important for CO2 conversion technologies. In this work, earth abundant transition metal (TM = V, Cr, Mn, Fe, Co and Ni) atoms embedded into two-dimensional (2D) Nb2NO2 (TM@Nb2NO2) as ... |
municipal solid wastewater-gas shiftvolume percentageweight percentageSyngas obtained during biomass/municipal solid waste (MSW) gasification is mainly a mixture of carbon monoxide, carbon dioxide, hydrogen, methane and nitrogen, which can be utilized for electric power generation or liquid fuel synthesis [1]. The biom... |
H2S and HCl are common impurities in raw syngas produced during gasification of biomass and municipal solid waste. The purpose of this study was to investigate the poisoning effect of H2S and HCl on synthesized and commercial catalysts during steam reforming of naphthalene. Four synthesized catalysts... |
Data will be made available on request.Supplying most of the energy consumed by our society from fossil fuels is at risk of critically affecting global warming due to net CO2 emissions into the atmosphere [1]. An energy matrix transformation from the currently used net emission sources to CO2 neutrality is essential to... |
A computational approach to judiciously predict high-entropy alloys (HEAs) as an efficient and sustainable material class for the electrochemical reduction of nitrogen is here presented. The approach employs density functional theory (DFT), adsorption energies of N atoms and N2 molecules as descripto... |
The efficient conversion of biogas to liquid fuels (Bio-GTL) could become a key industrial process in the future bio-economy. Biogas is an attractive renewable energy source and can be produced by anaerobic digestion of organic wastes in the presence of microorganisms. Methane and carbon dioxide are the major constitue... |
Liquid fuels produced via Fischer-Tropsch synthesis from biomass-derived syngas constitute an attractive and sustainable energy vector for the transportation sector. This study focuses on the role of potassium as a promoter in Ni-based catalysts for reducing coke deposition during catalytic dry refor... |
Lignin is an abundant biomass source that can be converted into value-added aromatic platform chemicals.
1
To use biomass to its fullest, the challenges involved in valorizing lignin need to be overcome.
2–5
Conventional lignocellulose delignification methods, such as Kraft and organosolv pulping, require the complet... |
Due to the highly complex polyphenolic structure of lignin, depolymerization without a prior chemical treatment is challenging, and new catalysts are required. Atomically dispersed catalysts are able to maximize the atomic efficiency of noble metals, simultaneously providing an alternative strategy t... |
Triglyceride based biomass is an appealing alternative to produce transportation fuels as they are readily available, renewable [1] and its long chain usually contains carbons between 16 and 18 [2], which is within diesel range [3] and it results in high heating value [2]. However, vegetable oils cannot be directly use... |
An alternative to non-renewable fuels is the production of green diesel from deoxygenation of vegetable oils. In this study, the effect of the supports on nickel phosphide catalysts for deoxygenation of oleic acid to produce hydrocarbons was investigated. Nickel phosphide catalysts supported on USY, ... |
Serious environmental and health challenges that are caused by air pollution such as global warming, weather changes, damage to plants, and spread of many diseases such as chronic asthma, pulmonary insufficiency and cardiovascular diseases, which is responsible for about 9 million deaths per year, have become a common ... |
The catalytic oxidation of carbon monoxide (CO) and hydrocarbons (HC) is a very important process for maintaining health protection systems. So nickel and silver are widely used in heterogeneous catalysis. In this work, the activate of (NiO, Ag/ Fe2O3, Al2O3, Bentonite) based gasoline Oxidation Catal... |
With the increasing harsh of the legislation on a sulfur content, as the conventional method of reducing sulfur, the hydrodesulfurization (HDS) could not meet the increasingly severe requirements of deep desulfurization [1]. Recent years, the oxidative desulfurization (ODS) has been developed because of its high activi... |
The rational design of the single transition metal atoms (Cu and Ni) anchoring on the boron nitride (TM-BN) pristine and defective monolayer has been investigated by means of density functional theory. Our calculations revealed that both B-vacancy (VB) and N-vacancy (VN) on BN monolayer are good site... |
CO2 capture and utilization is an important option for a future carbon-neutral economy as excessive CO2 emissions affect the climate and the environment [1,2]. The catalytic conversion of CO2 to value-added chemicals is one of the most promising and researched approaches. In combination with renewable hydrogen, the con... |
Ni/Al2O3 is an active catalysts for CO2 hydrogenation to both CH4 and CO. By doping with Ga, we succeeded in shifting the selectivity of these catalysts almost completely toward CO. In-situ IR spectroscopy studies showed that the catalyst activity is directly related to the concentration of surface h... |
Data will be made available on request.Ethylene is mainly produced at industrial scale by steam cracking of naphtha, LPG or natural gas condensates at high temperature (between 750 and 875 °C) and short contact time, resulting in products that are difficult to separate [1,2]. This process presents a low energy efficien... |
In the present article, a relationship between the catalytic performance in the oxidative dehydrogenation of ethane (ODHE) for Nb-doped NiO catalysts and their electrochemical properties has been proposed. To do so, highly stable and selective Nb-doped NiO catalysts for the ODHE to ethylene have been... |
Data will be made available on request.Due to economic, social, and environmental reasons, research focusing on alternative fuel and chemical sources has gained interest. As reserves of fossil fuel are declining worldwide, combined with an increasing demand for petroleum fuels by emerging economies, the price of conven... |
This study reports an efficient conversion route for prosopis juliflora (PJ) biomass into high-quality bio-oil through catalytic hydrothermal liquefaction (HTL) process with systematically substituted hydrogen-rich plastic waste ‘polypropylene (PP)’, and using alumina supported metal oxide (Mo, Ni, W... |
•
This study did not generate a new code.
•
The supplemental information includes all datasets generated and analyzed during this study.
•
Any additional information required to reanalyze the data reported in this paper is available from the lead contact upon request.
This study did not generate a new code.The... |
Dry reforming of methane (DRM) is an efficient process to transform methane and carbon dioxide to syngas. Nickel could show good catalytic activity for DRM, whereas the deactivation of nickel surfaces by the formation of inert carbon structures is inevitable. In this study, we carry out a detailed in... |
Methane is the primary component of natural gas, shale gas, biogas and combustible ice. Methane conversion has been a hot topic for several decades. With the fast exploration of shale gas, methane conversion has even attracted increasing attentions (Bian et al., 2017; Yi et al., 2015; Pan et al., 2010). Among various o... |
In this work, the structural effect of the plasma decomposed Ni/ZrO2 catalyst and the thermally calcined Ni/ZrO2 catalyst on the formation and the reactivity of the carbon formed from methane decomposition was investigated. The plasma prepared Ni/ZrO2 catalyst possesses smaller Ni particle size with ... |
No data was used for the research described in the article.As societal understanding of the adverse implications of global warming is increasing, so is the dependence on renewable energy sources such as solar and wind [1,2]. Water electrolysis provides a means to store this intermittently produced energy in the form of... |
Nickel-based catalysts for the alkaline oxygen evolution reaction (OER) demonstrate excellent catalytic performance and stability. However, a lack of fundamental understanding of the dynamic electronic and structural changes that occur under OER conditions inhibits the rational design of new material... |
Data will be made available on request.The global climate is facing two main challenges: first, the increased energy demand due to the growing world population, and second, growing anthropogenic CO2 emissions due to the use of non-renewable fossil fuels in major economic sectors. Ambitious targets like limiting the ris... |
Human activities such as burning fossil fuels for energy production have contributed to the rising global atmospheric CO2 concentration. The search for alternative renewable and sustainable energy sources to replace fossil fuels is crucial to meet the global energy demand. Bio-feedstocks are abundant... |
The increasingly strict environmental regulations on exhaust emissions of gasoline-powered transportation vehicles are compelling refineries around the world to produce gasoline with lower sulfur content [1–4]. S-Zorb gasoline adsorption desulfurization technology [5–10] is a typical ultra-low sulfur gasoline productio... |
In this work, nickel metal supported on different supports (SiO2, Al2O3, ZSM-5) were prepared by spraying nickel nitrate on the supports and calcined at 873 K. Then, they were characterized by XRD, XRF, N2 adsorption–desorption, NH3-TPD, MCH-TPD, H2-TPR, and pyridine-FTIR, and tested as catalysts for... |
CH4 is a major contributor to global warming. A reaction like the decomposition of methane has great environmental importance as CH4 is consumed and its concentration is depleted in the environment. Again, this reaction has great economic feature as it produces clean energy source H2 and high-quality carbon without the... |
Production of COx-free H2 from CH4 (a major global warming contributor) over cheap catalysts is a dominant task for the scientific community to accomplish environmental-friendly clean H2 energy sources. Herein, a tungsten oxide-activated carbon-supported Fe catalyst is prepared by impregnation method... |
No data was used for the research described in the article.The reduction of organic compounds is an important chemical technology used for the fabrication of valuable components for agrochemicals, pharmaceuticals, and cosmetics [1].Different Ni catalysts have been employed for hydrogenation of hydrocarbons and function... |
The NiOBDP and Ni/NiOBDP composites obtained by calcination of NiBDP MOF (MOF = metal–organic framework; BDP = 1,4-Bis(pyrazol-4-yl)benzene) in air at 700 °C were characterized by XRD (X-ray diffraction), TEM (Transmission electron microscopy), XPS (X-ray photoelectron spectroscopy) and Raman spectro... |
CO2 and CH4 are not only typical greenhouse gases, but also important carbon-containing resources. The CH4-CO2 reforming to syngas process can combine the comprehensive utilization of CH4 and the resource utilization of CO2, which provides a technological route for the comprehensive utilization of carbon and hydrogen s... |
The CH4-CO2 reforming reaction can realize the utilization of both CH4 and CO2, which is important to control the greenhouse effect and protect the environment. The development of low-cost, high-activity and high-stability reforming catalysts is the focus of research. This work used electrochemical m... |
The so-called Guefoams (guest-containing foams) are a new family of recently developed materials that are attracting increasing attention due to their promising behaviour in several applications. Guefoams consist of multifunctional porous materials hosting granular or fibrous phases with specific functionality (guests)... |
The preparation and use of Guefoams as heterogeneous catalyst is reported. The Guefoam catalyst consists of an open-pore Al-Si foam that accommodates a freely mobile guest phase (Ni/CeO2/Al2O3 particles) in its cavities, with neither a physical nor a chemical matrix-guest bond. A eutectic Al-12Si all... |
The global demand for energy fossil fuels has increased tremendously due to the increase in economic growth and pollution; notably, nonrenewable fossil fuels are continuously depleting. Several research emphases have focused on developing alternative routes for bioenergy production, such as the use of agricultural resi... |
This study investigated the effect of process conditions during the catalytic pyrolysis of softwood and non-wood on the pyrolysis product. Ni modified on calcined dolomite (Ni-DM) was used to determine the effectiveness of the catalytic activity and the effect of doping non-noble metals on the produc... |
No data was used for the research described in the article.At present, >300 different grades of polyolefins are commercially available for different applications. Particularly, polyethylenes (PE) and polypropylenes (PP) are the most important materials produced by the petrochemical industry [1]. Together, they account ... |
α-Diimine Ni and Pd complexes are one of the most examined late-transition organometallics in the application of catalyzed ethylene (co)polymerization. These organometallic catalysts provide unique advantages and particular opportunities to tailor the architectures, composition,... |
Precious metal nanoparticles supported on metal oxides are used for chemical conversions in heterogeneous and electrocatalysis. Reducing the size of the particles increases the fraction of atoms present at the nanoparticles’ surface, and thus the per-atom efficiency. When the particles enter the subnano regime, quantum... |
Understanding how metal atoms are stabilized on metal oxide supports is important for predicting the stability of “single-atom” catalysts. In this study, we use scanning tunnelling microscopy (STM) and x-ray photoelectron spectroscopy (XPS) to investigate four catalytically active metals – platinum, ... |
Biomass is a promising renewable source for the production of fuels, chemicals and H2
[1–4] due to its availability and CO2 neutral contribution. Besides, H2 is a clean fuel whose potential as an energy carrier makes it a promising choice for its transformation into any form of energy for diverse end-use applications.I... |
The fast deactivation of the reforming catalyst greatly conditions H2 production from biomass. In order to alleviate this problem, use of conditioning catalysts in a previous conditioning step has been proposed to modify the pyrolysis volatile stream reaching the reforming catalyst. The experimental ... |
Global anthropogenic CO2 emissions were reduced about 8% (2.6 Gt of CO2) in 2020, as a result of the Covid-19 crisis [1]. This fact, although results from lockdown measures and economy slowdown, may turn into the starting point from which CO2 emissions progressively decline in the future if adequate actions are taken. ... |
Conventional Ni/Al2O3 catalyst, currently used for COx removal in ammonia production, admits room for improvement as catalysts for application in low temperature CO2 methanation, which is the aim of this work. The Incipient Wetness Impregnation (IWI) has been replaced by Glycerol Assisted Impregnatio... |
The wide application of traditional fossil fuels not only produces amounts of green-house gases CO2, but also causes the emission of harmful substances such as SO2 and NOx, both of which endanger the environment [1,2]. The demand for clean energy is increasing. Solar energy, wind power, tidal and geothermal energy are ... |
With the rapid development of anion exchange membranes, researchers began to shift their attention from proton exchange membrane fuel cells (PEMFCs) with acid electrolytes to anion exchange membrane fuel cells (AEMFCs) with alkaline electrolytes. Non-precious metal catalysts such as Fe-N-C catalysts ... |
Over the decades, the large consumption of fossil fuels due to anthropogenic activities has released heat and greenhouse gas into the atmosphere. The concentration of CO2, one of the major greenhouse gases, in the atmosphere exceeds 410 parts per million (ppm), which is much higher than 280 ppm in the pre-industrial pe... |
Using clean solar energy to reduce CO2 into value-added products not only consumes the over-emitted CO2 that causes environmental problems, but also generates fuel chemicals to alleviate energy crises. The photocatalytic CO2 reduction reaction (PCO2RR) relies on the semiconductor photocatalysts that ... |
In recent decades, much attention has been paid to various methods of water remediation, including sorption (Abdel Maksoud et al., 2020; Ahsan et al., 2020; Bartczak et al., 2018; El-Sayed, 2020; Fang et al., 2020; Żółtowska-Aksamitowska et al., 2018), ozonation (Schmitt et al., 2020), photocatalytic and catalytic appr... |
Three different 3D fibrous-like NiO/Ni(OH)2/Ni‑carbonized spongin-based materials were prepared via a simple sorption–reduction method. Depending on the support used, the catalysts were composed of carbon, nickel oxide, nickel hydroxide and zero-valent nickel, with the surface content of the nickel-c... |
The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.PE-based polymers represent one of the most important materials class in our daily life due to their superb mechanical properties, chemical stability and low production costs [1]. In... |
A series of new tailored a-diimine Ni (II) complexes (Ni-OH, Ni-FOH, Ni-PhOH, and Ni-PhFOH) containing bulky ortho-N-aryl groups with various dibenzhydryl substitutes was successfully synthesized, characterized and applied in ethylene polymerization. The a-diimine ligands and Ni (II) complexes were c... |
Data will be made available on request.Hydrothermal liquefaction (HTL) is a promising thermochemical process for the conversion of wet biomass into energy-dense bio-oil which can be further refined into platform chemicals and liquid transportation fuels to replace fossil-derived petrochemicals (Bampaou et al., 2022). H... |
This article reports a safe, low-cost, and industrially applicable magnetite supported on activated carbon catalyst that can be magnetically retrieved from the solid and reused multiple times without the need of a regeneration step. The FeOx/C catalyst improved the bio-oil yield by 19.7 ± 0.96 % when... |
Excellent mechanical and chemical properties enable polyolefin widely used in automation, electronics and other industrial fields [1–3]. Current development trend indicates that the polyolefin industry will continue to maintain a rapid growth rate of 4%–5% in the next few years [4]. Furthermore, catalysts for olefin po... |
The structure of polyolefin has an important influence on its performance and application. Ethylene/1-hexene copolymerization is one of the important ways to control the structure of the polyolefin. However, research on the ethylene/1-hexene copolymerization catalyzed by nickel complexes with differe... |
In the industry, the catalytic hydrogenation of edible oils is typically carried out in a slurry reactor through a semi-batch process, with H2 gas injected at an elevated temperature and pressure [1]. One of the most imperative aspects of the process is the usage of a catalyst to catalyse the reaction. Although Ni-base... |
Sequentially precipitated Mg-promoted nickel-silica catalysts with ageing performed under various ultrasonic intensities were employed to study the catalyst performance in the partial hydrogenation of sunflower oil. Results from various characterisation studies showed that increasing ultrasonic inten... |
Hydrogen is called to play a key role in future energy demand as a substitute for fossil fuels [1]. In fact, in the post-pandemic crisis scenario, the alternatives for the production and use of renewable H2 are taking on great relevance, as for example in the economic recovery package of EU (NextGenerationEU) with €750... |
The catalyst stability, mainly affected by coke deposition, remains being a challenge for the development of a sustainable process for hydrogen production by steam reforming (SR) of bio-oil. In this work, the influence of oxygenates composition in bio-oil on the deactivation by coke of a NiAl2O4 spin... |
Hydrogen is potential as a fuel source has touted for decades, but the technology has never gotten off the ground on a sizeable scale. This is due to complexities with its safety, efficient storage, and very crucial concerns regarding the cost of infrastructure for H2 delivery. This novel finding may have found the sol... |
The La based perovskite type LaMO3 (M = Ni, Co) oxides were prepared by combustion synthesis method using citric acid as organic fuel. These catalyst precursors tested for ammonia decomposition. The LaNiO3 and LaCoO3 catalysts showed good activity for NH3 decomposition. The LaNiO3 catalyst displayed ... |
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