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	The deactivation of co/sio2 catalyst for fischer-tropsch synthesis at different ratios of h-2 to co
	Zhou, Wei; Chen, Jian-Gang; Fang, Ke-Gong; Sun, Yu-Han
刊名	Fuel processing technology
	2006-07-01
卷号	87期号:7页码:609-616
关键词	Fischer-tropsch synthesis H-2/co ratio Deactivation Cobalt silicates and/or hydrosilicates
ISSN号	0378-3820
DOI	10.1016/j.fuproc.2006.01.008
通讯作者	Sun, yu-han(yhsun@sxicc.ac.cn)
英文摘要	The deactivation of co/sio2 catalyst for fischer-tropsch synthesis (fts) at different h-2/co ratios was investigated by xrd, ftir, bet, xps, tpr and h-2 chemisorption. it was found that the deactivation rate of the catalyst increased with the rise of the h-2/co ratio. the generation of silicates and/or hydrosilicates species was evidenced by tpr and xps, and their amounts were monotonously enhanced with increasing h-2/co ratio, which suggested that the deactivation was caused by the transformation of metallic cobalt into inactive silicates and the high partial pressure of h-2 facilitated the formation of the silicates. moreover, the percentage loss of the surface cobalt was larger than that of bulk cobalt, suggesting that the cobalt silicates and/or hydrosilicates species were formed mainly on the surface of the catalyst or in the small crystallites. for the catalyst run at h-2/co ratio of 1, it was observed that the sintering also contributed to the catalyst deactivation, but it was a less important factor for the deactivation. (c) 2006 elsevier b.v. all rights reserved.
WOS关键词	PROMOTED CO/AL2O3 CATALYSTS ; COBALT CATALYSTS ; CO/ZRO2/SIO2 CATALYST ; WATER ; SELECTIVITY ; MECHANISM ; HYDROGENATION ; SUPPORT
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
WOS类目	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000238916800006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378900
专题	中国科学院大学
通讯作者	Sun, Yu-Han
作者单位	1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Wei,Chen, Jian-Gang,Fang, Ke-Gong,et al. The deactivation of co/sio2 catalyst for fischer-tropsch synthesis at different ratios of h-2 to co[J]. Fuel processing technology,2006,87(7):609-616.
APA	Zhou, Wei,Chen, Jian-Gang,Fang, Ke-Gong,&Sun, Yu-Han.(2006).The deactivation of co/sio2 catalyst for fischer-tropsch synthesis at different ratios of h-2 to co.Fuel processing technology,87(7),609-616.
MLA	Zhou, Wei,et al."The deactivation of co/sio2 catalyst for fischer-tropsch synthesis at different ratios of h-2 to co".Fuel processing technology 87.7(2006):609-616.

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