Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 199 - 206 (1989)
Update date:2022-08-23
Topics:
Hatano, Masaharu
Otsuka, Kiyoshi
Kinetic studies and isotopic exchange measurements (CH4-CD4 and 16O2-18O2) of the oxidative coupling of methane over stoichiometric LiNiO2 indicate a redox mechanism involving lattice oxygen atoms.The formation of C2 products is second-order in methane, both in the presence and absence of gaseous oxygen.Methane is dissociatively adsorbed on Ni3+-O2- sites, and the rate-determining step is the coupling of adsorbed CH3.Reduction of the catalyst by methane forms NiO, over which deep oxidation occurs.Adsorbed oxygen or gaseous oxygen is responsible for the deep oxidation.
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