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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2006,Vol.22>> Issue(08)>> 1040-1042     doi: 10.3866/PKU.WHXB20060826         中文摘要
Li-ZnO/La2O3 Catalyst for the Oxidation Coupling of Methane at Low Temperature
HOU Si-Cong;LIU Ling-Tao;KOU Yuan
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, Green Chemistry Center of Peking University, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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The oxidative coupling of methane (OCM) at low temperature was examined on Li- ZnO/La2O3 catalyst with w(Li)=2% and w(ZnO)=20%. CH4 conversion of 27.3% with C2 selectivity of 65.2% was obtained at 680 ℃ and the C2 yield reached 21.8% at 700 ℃ under reaction conditions. Raman and XPS results suggested that the low- temperature activity was related to the concentration of adsorbed oxygen species on the catalyst surface and La2O2CO3 was supposed to be responsible for the enhancement of C2 selectivity in OCM.

Keywords: Oxidative coupling of methane   Low temperature   Li- ZnO/La2O3   Adsorbed oxygen species   La2O2CO3  
Received: 2006-06-01 Accepted: 2006-06-22 Publication Date (Web): 2006-07-07
Corresponding Authors: KOU Yuan Email: yuankou@pku.edu.cn


Cite this article: HOU Si-Cong;LIU Ling-Tao;KOU Yuan. Li-ZnO/La2O3 Catalyst for the Oxidation Coupling of Methane at Low Temperature[J]. Acta Phys. -Chim. Sin., 2006,22 (08): 1040-1042.    doi: 10.3866/PKU.WHXB20060826
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