Simulation of methane partial oxidation over silica‐supported MoO3and V2O5
作者:
Michael D. Amiridis,
James E. Rekoske,
James A. Dumesic,
Dale F. Rudd,
Nicholas D. Spencer,
Carmo J. Pereira,
期刊:
AIChE Journal
(WILEY Available online 1991)
卷期:
Volume 37,
issue 1
页码: 87-97
ISSN:0001-1541
年代: 1991
DOI:10.1002/aic.690370108
出版商: American Institute of Chemical Engineers
数据来源: WILEY
摘要:
AbstractMicrokinetic simulations have been carried out to describe the partial oxidation of methane over silica‐supported molybdena and vanadia. The objective of this study was to formulate a physically reasonable reaction network to capture the basic aspects of the surface catalytic chemistry and to use this network to link methane oxidation kinetics with the kinetics observed for the oxidation of subsequent gaseous products, i.e., methanol, formaldehyde, and carbon monoxide. The most abundant reactive intermediates on the catalyst surface are suggested to be oxygen and hydroxyl groups. This reaction network successfully predicts the catalytic activities, selectivities, activation energies, and reaction orders observed over silica‐supported molybdena and vanadia; and the microkinetic model also semiquantitatively explains the kinetic trends for related catalyst systems and is consistent with surface bonding energetics reported in the literature over various oxide catalysts. The microkinetic reaction network properly reduces to the more simple macrokinetic model reported previously for methane partial oxidat
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