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Reaction Chemistry of W—Mn/SiO2 Catalyst for the Oxidative Coupling of Methane
作者姓名:ShubenLi
作者单位:StateKeyLaboratoryforOxoSynthesisandSclectiveOridation,LanzhouInstituteofChemicalPhysics,ChineseAcademyofSciences,Lanzhou730000,China
摘    要:Reaction chemistry of the OCM reaction on W-Mn/SiO2 catalyst has been reviewed in this account.Initial activity and selectivity,stability in a long-term reaction,reaction at elevated pressures and a modelling test in a stainless-steel fluidized-bed reactor show that W-Mn/SiO2 has promising performance for the development of an OCM process that directly produces ethylene from natural gas.A study on surface catalytic reaction kinetics and used cataly st structure characterization revealed a possible reason why C2 and COx selectivity changed during the long-term reaction.Further improvement of the catalyst composition and preparation metbod should be a future direction of study on OCM reaction over W-Mn/SiO2 catalyst.

关 键 词:甲烷  氧化偶连反应  负载型催化剂      二氧化硅

Reaction Chemistry of W-Mn/SiO2 Catalyst for the Oxidative Coupling of Methane
ShubenLi.Reaction Chemistry of W-Mn/SiO2 Catalyst for the Oxidative Coupling of Methane[J].Journal of Natural Gas Chemistry,2003,12(1):1-9.
Authors:Shuben Li
Institution:State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Abstract:Reaction chemistry of the OCM reaction on W-Mn/SiO2 catalyst has been reviewed in this account. Initial activity and selectivity, stability in a long-term reaction, reaction at elevated pressures and a modelling test in a stainless-steel fluidized-bed reactor show that W-Mn/SiO2 has promising performance for the development of an OCM process that directly produces ethylene from natural gas. A study on surface catalytic reaction kinetics and used catalyst structure characterization revealed a possible reason why C2 and COX selectivity changed during the long-term reaction. Further improvement of the catalyst composition and preparation method should be a future direction of study on OCM reaction over W-Mn/SiO2 catalyst.
Keywords:W-Mn/SiO2 catalyst  oxidative coupling of methane  elevated pressure  methane
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