Journal ArticleDOI
Dry reforming of methane to synthesis gas over supported molybdenum carbide catalysts
Attila J. Brungs,Andrew P. E. York,John B. Claridge,Carlos Márquez-Alvarez,Malcolm L. H. Green +4 more
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TLDR
The relative stability of the catalysts is Mo2C/Al2O3>Mo 2C/ZrO2>Mo2c/SiO2 >Mo 2c/TiO2, and calcination of the oxide precursor for short periods was found to be beneficial to the catalyst stability.Abstract:
The dry reforming of methane at elevated pressure over supported molybdenum carbide catalysts, prepared from oxide precursors using ethane TPR, has been studied. The relative stability of the catalysts is Mo2C/Al2O3>Mo2C/ZrO2>Mo2C/SiO2>Mo2C/TiO2, and calcination of the oxide precursor for short periods was found to be beneficial to the catalyst stability. Although the support appears to play no beneficial role in the methane dry reforming reaction, the alumina-supported material was stable for long periods of time; this may be important for the production of pelletised industrial catalysts. The evidence suggests that the differences in the stabilities may be due to interaction at the precursor stage between MoO3 and the support, while catalyst deactivation is due to oxidation of the carbide to MoO2, which is inactive for methane dry reforming.read more
Citations
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A review of dry (CO2) reforming of methane over noble metal catalysts
Devendra Pakhare,James J. Spivey +1 more
TL;DR: Dry (CO2) reforming of methane literature for catalysts based on Rh, Ru, Pt, and Pd metals is reviewed, including the effect of these noble metals on the kinetics, mechanism and deactivation of these catalysts.
Journal ArticleDOI
Hydrogen production reactions from carbon feedstocks: fossil fuels and biomass.
Journal ArticleDOI
Dry reforming of methane: Influence of process parameters—A review
TL;DR: In this article, the authors explored the influences of the active metal, support, promoter, preparation methods, calcination temperature, reducing environment, particle size and reactor choice on catalytic activity and carbon deposition for the dry reforming of methane.
Journal ArticleDOI
Catalyst design for dry reforming of methane: Analysis review
Nicolas Abdel Karim Aramouni,Jad G. Touma,Belal J. Abu Tarboush,Joseph Zeaiter,Mohammad N. Ahmad +4 more
TL;DR: In this article, the authors studied the effect of metal support and metal support-promoter combinations on the performance and stability of bi-and tri-metallic catalysts for dry reforming of methane, and concluded that a catalyst design must take into account not only the separate effects of the active metal, support and promoter, but also include the combined and mutual interactions of these components.
Journal ArticleDOI
Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation
TL;DR: In this short review, attention will be given to the thermodynamics of dry reforming followed by an investigation on dry reforming using heterogeneous catalyst by focusing on the most popular elements used in literature for dry reforming.
References
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Journal ArticleDOI
Platinum-Like Behavior of Tungsten Carbide in Surface Catalysis
R. B. Levy,Michel Boudart +1 more
TL;DR: Tungsten carbide catalyzes the formation of water from hydrogen and oxygen at room temperature, the reduction of tungsten trioxide by hydrogen in the presence of water, and the isomerization of 2,2-dimethylpropane to 2-methylbutane.
Journal ArticleDOI
Activation of CH4 and Its Reaction with CO2 over Supported Rh Catalysts
TL;DR: In this article, the authors investigated the dissociation of CH4 and CO2, as well as the reaction between CH 4 and CO 2, over supported Rh in a fixed-bed continuous-flow reactor.
Journal ArticleDOI
Molybdenum carbide catalysts. I. Synthesis of unsupported powders
TL;DR: In this article, a temperature-programmed reaction between MoO3 of low specific surface area Sg and a CH 4 H 2 mixture produces unsupported powders of hexagonal Mo2C with Sg from 50 to 100 m2 g− and CO uptake number density of up to 5.0 × 1014 cm−2.
Journal ArticleDOI
New catalysts for the conversion of methane to synthesis gas : Molybdenum and tungsten carbide
John B. Claridge,Andrew P. E. York,Attila J. Brungs,Carlos Márquez-Alvarez,Jeremy Sloan,Shik Chi Edman Tsang,Malcolm L. H. Green +6 more
TL;DR: In this paper, high surface area molybdenum and tungsten carbide materials, synthesised by the temperature programming reduction of the relevant metal oxide with methane/hydrogen, are highly efficient catalysts for the conversion of methane to synthesis gas, via the steam reforming, dry reforming, or partial oxidation processes.