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Title: Oxidative coupling of methane over lead oxide catalyst: Kinetic study and reaction mechanism

Abstract

Lattice oxygen of PbO was found to be the active species for the oxidative coupling of methane, whereas adsorbed oxygen was supposed to be active for the carbon oxides formation. The coupling reaction proceeded through a redox cycle between Pb(O) and Pb(II) which was facilitated by being supported on MgO catalyst. The kinetic data suggested that the oxidation of Pb(O) by oxygen was much faster than the reduction of PbO by methane and that the rate-determining step of the oxidative coupling reaction should be the formation of methyl radical via the reaction of methane and surface oxide.

Authors:
; ; ;
Publication Date:
Research Org.:
Dept. of Synthetic Chemistry, Faculty of Engineering, The Univ. of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113 (JP)
OSTI Identifier:
7031187
Resource Type:
Journal Article
Journal Name:
Ind. Eng. Chem. Res.; (United States)
Additional Journal Information:
Journal Volume: 26:11
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LEAD OXIDES; CHEMICAL REACTION KINETICS; METHANE; CATALYSTS; CATALYTIC EFFECTS; MAGNESIUM OXIDES; METHYL RADICALS; OXIDATION; OXYGEN; REDOX REACTIONS; ALKALINE EARTH METAL COMPOUNDS; ALKANES; ALKYL RADICALS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; HYDROCARBONS; KINETICS; LEAD COMPOUNDS; MAGNESIUM COMPOUNDS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RADICALS; REACTION KINETICS; 400201* - Chemical & Physicochemical Properties

Citation Formats

Asami, K, Shikada, T, Fujimoto, K, and Tominaga, H O. Oxidative coupling of methane over lead oxide catalyst: Kinetic study and reaction mechanism. United States: N. p., 1988. Web.
Asami, K, Shikada, T, Fujimoto, K, & Tominaga, H O. Oxidative coupling of methane over lead oxide catalyst: Kinetic study and reaction mechanism. United States.
Asami, K, Shikada, T, Fujimoto, K, and Tominaga, H O. 1988. "Oxidative coupling of methane over lead oxide catalyst: Kinetic study and reaction mechanism". United States.
@article{osti_7031187,
title = {Oxidative coupling of methane over lead oxide catalyst: Kinetic study and reaction mechanism},
author = {Asami, K and Shikada, T and Fujimoto, K and Tominaga, H O},
abstractNote = {Lattice oxygen of PbO was found to be the active species for the oxidative coupling of methane, whereas adsorbed oxygen was supposed to be active for the carbon oxides formation. The coupling reaction proceeded through a redox cycle between Pb(O) and Pb(II) which was facilitated by being supported on MgO catalyst. The kinetic data suggested that the oxidation of Pb(O) by oxygen was much faster than the reduction of PbO by methane and that the rate-determining step of the oxidative coupling reaction should be the formation of methyl radical via the reaction of methane and surface oxide.},
doi = {},
url = {https://www.osti.gov/biblio/7031187}, journal = {Ind. Eng. Chem. Res.; (United States)},
number = ,
volume = 26:11,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 1988},
month = {Tue Nov 01 00:00:00 EST 1988}
}