Journal ArticleDOI
Carbon formation and its influence on ethanol steam reforming over Ni/Al2O3 catalysts
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In this paper, the properties of catalysts were studied by N2 physisorption, X-ray diffraction (XRD) and temperature programmed reduction (TPR).About:
This article is published in Catalysis Today.The article was published on 2007-05-30. It has received 227 citations till now. The article focuses on the topics: Filamentous carbon & Temperature-programmed reduction.read more
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Journal ArticleDOI
Lignin depolymerization (LDP) in alcohol over nickel-based catalysts via a fragmentation–hydrogenolysis process
Qi Song,Qi Song,Feng Wang,Jiaying Cai,Jiaying Cai,Yehong Wang,Junjie Zhang,Junjie Zhang,Weiqiang Yu,Jie Xu +9 more
TL;DR: In this article, the authors showed that lignin can be selectively cleaved into propylguaiacol and propylsyringol with total selectivity >90% at a lignins conversion of about 50%.
Journal ArticleDOI
Evaluation of thermochemical routes for hydrogen production from biomass: A review
TL;DR: In this paper, a review deals with the different reactor configurations, operating conditions and catalysts used in each process and compares the different alternatives in terms of H2 production, with emphasis placing on the advantages of the two-step strategy.
Journal ArticleDOI
Ethanol steam reforming over Co-based catalysts: Role of oxygen mobility
Hua Song,Umit S. Ozkan +1 more
TL;DR: In this article, the effect of oxygen mobility on the bio-ethanol steam reforming of ZrO2-supported cobalt catalysts was investigated, and it was found that the addition of ceria was found to improve the catalytic stability as well as activity.
Journal ArticleDOI
Catalytic Reforming of Oxygenates: State of the Art and Future Prospects.
Di Li,Xinyu Li,Jinlong Gong +2 more
TL;DR: In insights into the intrinsic mechanism involved in catalytic reforming are presented and guidance is provided to the development of novel catalysts and processes for the efficient utilization of oxygenates for energy and environmental purposes.
Journal ArticleDOI
Efficient hydrogen production from ethanol steam reforming over La-modified ordered mesoporous Ni-based catalysts
TL;DR: In this article, the meso-x-LaNiAl catalysts with ordered mesostructure and La promoters were synthesized for hydrogen production from ethanol steam reforming, which exhibited excellent textural properties such as high specific surface areas, large pore volumes and uniform pore sizes.
References
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Journal ArticleDOI
Steam Reforming and Graphite Formation on Ni Catalysts
Hanne Skov Bengaard,Jens K. Nørskov,Jens Sehested,Clausen Bjerne Steffen,L.P. Nielsen,A.M. Molenbroek,Jens R. Rostrup-Nielsen +6 more
TL;DR: Based on density functional theory calculations, kinetic measurements, microkinetic and Monte Carlo simulations, thermogravimetric analysis (TGA) experiments, extended X-ray absorption spectroscopy (EXAFS) measurements, and experimental results from the literature, this paper presented a detailed and comprehensive mechanistic picture of the steam reforming process on a Ni catalyst.
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Mechanisms of carbon formation on nickel-containing catalysts.
TL;DR: A complex dependence of rate upon temperature is observed in many systems and different explanations for the existence of a rate maximum and an apparent negative activation energy are discussed in this paper, although other effects may influence the magnitude of the observed activation energy.
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Sulfur-passivated nickel catalysts for carbon-free steam reforming of methane
TL;DR: In this paper, it has been observed that carbon-free steam reforming of methane can be obtained on a partly sulfur-passivated nickel catalyst under conditions which, without the presence of sulfur, would result in formation of whisker carbon.
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Production of hydrogen for fuel cells by reformation of biomass-derived ethanol
TL;DR: In this article, the authors investigated the influence of several parameters on the catalytic activity and selectivity, including reaction temperature, water-to-ethanol ratio and space velocity, on the Ni/La2O3 catalyst.
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Bio-ethanol catalytic steam reforming over supported metal catalysts
TL;DR: In this paper, a new strategy for maximizing the hydrogen production and minimizing the CO formation is proposed, which is based on the unexpected observation that any highly selective catalytic formulation should be free of any promoter in the water gas shift reaction (WGSR) which tends to equilibrate the SRR gas towards higher CO concentrations.