Low temperature oxidative dehydrogenation of ethane over catalysts based on group VIII metals

	Low temperature oxidative dehydrogenation of ethane over catalysts based on group VIII metals
	Schuurman, Y ; Ducarme, V ; Chen, T ; Li, W ; Mirodatos, C ; Martin, GA
刊名	APPLIED CATALYSIS A-GENERAL
	1997-12-05
卷号	163 期号:1-2 页码:227-235
关键词	Oxidative Dehydrogenation Of Ethane Iron Cobalt Nickel Palladium Platinum Mechanism Tap Magnetic Measurements Redox Properties Of Nickel
ISSN号	0926-860X
文献子类	Article
英文摘要	Unsupported Fe, Co and Ni catalysts are active in the oxidative dehydrogenation of ethane (ODHE) at low temperature. A conversion of 1% is achieved at 585, 438 and 487 K, respectively. The selectivity towards ethylene is found to be ca. 60% at low conversion. As the reaction temperature increases, the selectivity remains nearly constant for Ni whilst it decreases for Fe and Co. This behaviour has been explained by comparing the catalytic properties of Co and Ni towards ethane and ethylene oxidation. The ODHE intrinsic activity sequence (Co>N>Fe) is similar to that observed for the homomolecular exchange of oxygen, confirming that these catalysts are in an oxidized state in the course of the ODHE reaction. The study of the reduction and oxidation of unsupported and silica-supported nickel catalysts using magnetic methods has shown that the catalytic activity is not related to the ease of the Ni2+-Ni-0 transition. TAP experiments carried out over Ni have revealed that the oxygen species involved in the reaction are irreversibly held by the catalyst at 573 K (possibly O-) from which a reaction mechanism is proposed. Furthermore, this series of experiments have shown that ethane is irreversibly adsorbed and that CO2 originates from a parallel-consecutive scheme. (C) 1997 Elsevier Science B.V.
WOS关键词	OXIDES ; NICKEL
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1997YJ74800019
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168226]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.INST RECH CATALYSE,CNRS,F-69626 VILLEURBANNE,FRANCE 2.CHINESE ACAD SCI,DALIAN INST CHEM PHYS,DALIAN 116023,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Schuurman, Y,Ducarme, V,Chen, T,et al. Low temperature oxidative dehydrogenation of ethane over catalysts based on group VIII metals[J]. APPLIED CATALYSIS A-GENERAL,1997,163(1-2):227-235.
APA	Schuurman, Y,Ducarme, V,Chen, T,Li, W,Mirodatos, C,&Martin, GA.(1997).Low temperature oxidative dehydrogenation of ethane over catalysts based on group VIII metals.APPLIED CATALYSIS A-GENERAL,163(1-2),227-235.
MLA	Schuurman, Y,et al."Low temperature oxidative dehydrogenation of ethane over catalysts based on group VIII metals".APPLIED CATALYSIS A-GENERAL 163.1-2(1997):227-235.