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Studies of mechanism of catalytic action on oxidative dehydrogenation of ethane over NiO
Chen, T; Li, WZ; Yu, CY
关键词Nio Nonstoichiometric Oxygen Oxidative Dehydrogenation Of Ethane Mechanism
刊名ACTA CHIMICA SINICA
1999
57期:9页:986-991
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]OXIDE
英文摘要The mechanism of catalytic action on oxidative dehydrogenation of ethane over NiO has been investigated by means of O-2 - TPD, pulse measure, in situ Weiss magnetic methods and TAP(temporal analysis of products) experiments. It is found that the oxidized Ni is maintained in the course of ODHE reaction. The exchange between gas phase oxygen and nonstoichiometric oxygen (alpha ,beta oxygen species) is reversible, and the beta oxygen species (possibly O-),which exists both on the surface and in the bulk of the catalyst, shows higher selectivity towards ethylene than the ar one (possibly O-2(-),O-2(2-)) which just exists on the surface of the catalyst. The mechanism is proposed that the ethylene, which is not only the product but also the intermedium of forming CO2, forms from the reaction of the O- with ethane on the catalysts' surface, and the CO2 forms by the reaction of ethylene and/or C2H5 with O-2(-),O-2(2-) and O-2(,)The catalyst is reoxidized with the help of the reaction between oxygen vacancy, lattice oxygen and oxygen adsorpted.
语种英语
WOS记录号WOS:000082978300007
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138587
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Chen, T,Li, WZ,Yu, CY. Studies of mechanism of catalytic action on oxidative dehydrogenation of ethane over NiO[J]. ACTA CHIMICA SINICA,1999,57(9):986-991.
APA Chen, T,Li, WZ,&Yu, CY.(1999).Studies of mechanism of catalytic action on oxidative dehydrogenation of ethane over NiO.ACTA CHIMICA SINICA,57(9),986-991.
MLA Chen, T,et al."Studies of mechanism of catalytic action on oxidative dehydrogenation of ethane over NiO".ACTA CHIMICA SINICA 57.9(1999):986-991.
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