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Characterisation of SiO2-supported nickel catalysts for carbon dioxide reforming of methane
Author(s) -
Jonathan J. Gamman,
Graeme J. Millar,
Graham Rose,
John Drennan
Publication year - 1998
Publication title -
journal of the chemical society faraday transactions
Language(s) - English
Resource type - Journals
eISSN - 1364-5455
pISSN - 0956-5000
DOI - 10.1039/a706730e
Subject(s) - catalysis , methane , nickel , thermogravimetry , carbon dioxide reforming , reaction mechanism , radical , microstructure , carbon dioxide , materials science , inorganic chemistry , carbon fibers , chemistry , chemical engineering , syngas , metallurgy , organic chemistry , composite number , composite material , engineering
The CO2-methane reformation reaction over Ni/SiO2 catalysts has been extensively studied using a range of temperature-programmed techniques and characterisation of the catalysts by thermogravimetry (TG), X-ray diffraction (XRD) and electron microscopy (TEM). The results indicate a strong correlation between the microstructure of the catalyst and its performance. The role of both CO2 and CH4 in the reaction has been investigated and the role of methyl radicals in the reaction mechanism highlighted. A reaction mechanism involving dissociatively adsorbed CO2 and methyl radicals has been proposed

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