Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis

	Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis
	Wang, Tao 1; Ding, Yunjie 1,2; Lue, Yuan 1; Zhu, Hejun 1; Lin, Liwu 1,2
刊名	journal of natural gas chemistry
	2008-06-01
卷号	17 期号:2 页码:153-158
关键词	lanthanum promoter Fischer-Tropsch synthesis Zr-Co/AC catalyst reducibility
ISSN号	1003-9953
通讯作者	丁云杰
产权排序	1;1
英文摘要	the influence of la loading on zr-co/activated carbon (ac) catalysts has been studied for fischer-tropsch synthesis. the catalyst samples were characterized by xrd, tpr, co-tpd, and temperature programmed co hydrogenation. the catalytic property was evaluated in a fixed bed reactor. the experimental results showed that co conversion increased from 86.4% to 92.3% and the selectivity to methane decreased from 14.2% to 11.5% and c(5+) selectivity increased from 71.0% to 74.7% when low la loading (la = 0.2wt%) was added into the zr-co/ac catalyst. however, high loadings of la (la = 0.3-1.0 wt%) would decrease catalyst activity as well as the c5+ selectivity and increase methane selectivity. xrd results displayed that la-modified zr-co/ac catalyst had little effect on the dispersion of co catalyst. but, the results of tpr, co-tpd, and temperature programmed co hydrogenation techniques indicated that the extent of cobalt reduction was found to greatly influence the activity and selectivity of the catalyst. the addition of a small amount of la increased the reducibility of the zr-co/ac catalyst and restrained the formation of methane and improved the selectivity to long chain hydrocarbons. however, excess of la led to the decrease of the reducibility of co catalyst thus resulted in higher methanation activity.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; energy & fuels ; engineering, chemical
研究领域[WOS]	chemistry ; energy & fuels ; engineering
关键词[WOS]	supported cobalt catalysts ; co hydrogenation ; activated-carbon ; promotion ; ruthenium ; monoxide ; dispersion ; vanadium ; alumina ; boron
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000257686500008
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100231]
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.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Appl Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Tao,Ding, Yunjie,Lue, Yuan,et al. Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis[J]. journal of natural gas chemistry,2008,17(2):153-158.
APA	Wang, Tao,Ding, Yunjie,Lue, Yuan,Zhu, Hejun,&Lin, Liwu.(2008).Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis.journal of natural gas chemistry,17(2),153-158.
MLA	Wang, Tao,et al."Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis".journal of natural gas chemistry 17.2(2008):153-158.