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

Journal Article · Tue Nov 01 00:00:00 EST 1988 · Ind. Eng. Chem. Res.; (United States)

OSTI ID:7031187

Asami, K; Shikada, T; Fujimoto, K; Tominaga, H O

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.

• Research Organization: Dept. of Synthetic Chemistry, Faculty of Engineering, The Univ. of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113 (JP)
• OSTI ID: 7031187
• Journal Information: Ind. Eng. Chem. Res.; (United States), Vol. 26:11
• Country of Publication: United States
• Language: English

Related Subjects

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