Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst

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	Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst
	Ding, Mingyue1,2 ; Yang, Yong 1; Wu, Baoshan 1; Wang, Tiejun2 ; Ma, Longlong2 ; Xiang, Hongwei 1; Li, Yongwang 1
刊名	journal of molecular catalysis a-chemical
	2011-12-01
卷号	351 页码:165-173
关键词	Transformation behavior Iron-based catalyst Carbonaceous species Iron carbides Mossbauer effect spectroscopy
英文摘要	transformation behavior of carbonaceous species over a precipitated iron-based fischer-tropsch synthesis (fts) catalyst was investigated by mossbauer effect spectroscopy (mes), x-ray photoelectron spectroscopy (xps), co temperature-programmed desorption (co-tpd), temperature-programmed hydrogenation (tph), high resolution transmission electron microscopy (hrtem) and diffuse reflectance infrared fourier transform spectroscopy (drifts). the catalytic activities were tested in a fixed bed reactor. it was found that during carburization the fresh catalyst was firstly reduced from alpha-fe(2)o(3) to fe(3)o(4), accompanied simultaneously with the formation of atomic (c(alpha)) and polymeric (c(beta)) carbonaceous species on the surface of the catalyst. with time on stream the fe(3)o(4) formed in the near-surface regions was converted gradually to chi-fe(5)c(2), and the amounts of c(alpha) and c(beta) species presented an increasing trend. subsequently, these species were combined partly together to form the graphitic-type (c(delta)) carbonaceous species, and the c(delta) species largely covered on the surface of iron carbides. the formation of iron carbides (especially for chi-fe(5)c(2)), c(alpha) and c(beta) species on the surface layers promoted the catalytic activity, whereas the c(delta) species formed restrained the active sites for fts reaction. (c) 2011 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	manganese catalyst ; fe catalysts ; hydrogenation ; activation ; reduction ; spectroscopy ; behavior ; syngas
收录类别	SCI
语种	英语
WOS记录号	WOS:000298127200020
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/10342]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Ding, Mingyue,Yang, Yong,Wu, Baoshan,et al. Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst[J]. journal of molecular catalysis a-chemical,2011,351:165-173.
APA	Ding, Mingyue.,Yang, Yong.,Wu, Baoshan.,Wang, Tiejun.,Ma, Longlong.,...&Li, Yongwang.(2011).Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst.journal of molecular catalysis a-chemical,351,165-173.
MLA	Ding, Mingyue,et al."Transformation of carbonaceous species and its influence on catalytic performance for iron-based Fischer-Tropsch synthesis catalyst".journal of molecular catalysis a-chemical 351(2011):165-173.