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Kinetic model of the partial oxidation of methane to synthesis gas over Ru/TiO 2 catalyst
Author(s) -
Elmasides Costas,
Ioannides Theophilos,
Verykios Xenophon E.
Publication year - 2000
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690460618
Subject(s) - partial oxidation , catalysis , methane , chemistry , kinetic energy , partial pressure , syngas , water gas shift reaction , oxygen , anaerobic oxidation of methane , elementary reaction , thermodynamics , inorganic chemistry , kinetics , chemical engineering , organic chemistry , physics , quantum mechanics , engineering
The kinetic behavior of the Ru/TiO 2 catalyst in the partial oxidation of methane to synthesis gas was investigated as a function of temperature and partial pressures of CH 4 and O 2 . It was found that the catalyst promotes, to a large extent the direct formation of CO and H 2 from the reaction of methane and oxygen, while the reforming and water–gas shift reactions are negligible under these conditions. A kinetic model, based on formation of CO and H 2 as primary products and of CO 2 and H 2 O as secondary oxidation products, describes satisfactorily the observed kinetic behavior. Values of model parameters satisfy thermodynamic constraints and agree well with data derived from surface science techniques and kinetic studies of elementary surface processes that are in the literature.