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	Preparation and characterization of carbon nanotube-promoted Co-Cu catalyst for higher alcohol synthesis from syngas
	Dong, Xin ; Liang, Xue-Lian ; Li, Hai-Yan ; Lin, Guo-Dong ; Zhang, Peng（New Mexico Inst Min & Technol, Dept Chem） ; Zhang, Hong-Bin ; Zhang HB(张鸿宾)
	2009-01
关键词	Multiwalled carbon nanotubes CoCu-based catalyst Higher alcohol synthesis
英文摘要	A cobalt-copper catalyst promoted by "herringbone-type" multiwalled carbon nanotubes (CNTs) was developed. This catalyst displayed excellent performance for higher alcohol synthesis (HAS) from syngas, with the (C2-8-alc. + DME)-STY reached 760 mg/(g.h) under the reaction conditions of 5.0 MPa and 573 K, which was 1.78 times that of the CNT-free host, Co3Cu1. The addition of a minor amount of the CNTs to the Co3Cu1 host did not cause a marked change in apparent activation energy for the HAS, but led to an increase at the surface of the catalyst of the concentration of catalytically active Co-species, CoO(OH), a kind of surface Co-species related closely to the selective formation of the higher alcohols. Excellent adsorption performance of this kind of CNTs for H-2 generated a surface micro-environment with a high concentration of H-adspecies on the functioning catalyst, thus increasing the rate of surface hydrogenation reactions in the HAS. Moreover, synergistic action of the high surface-concentration H-adspecies with CO2 in the feed-gas led to a greater inhibition for the WGS side-reaction. All these factors contribute considerably to an increase in the yield of alcohols. (C) 2008 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.cattod.2008.11.025]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Dong, Xin,Liang, Xue-Lian,Li, Hai-Yan,et al. Preparation and characterization of carbon nanotube-promoted Co-Cu catalyst for higher alcohol synthesis from syngas[J],2009.
APA	Dong, Xin.,Liang, Xue-Lian.,Li, Hai-Yan.,Lin, Guo-Dong.,Zhang, Peng.,...&张鸿宾.(2009).Preparation and characterization of carbon nanotube-promoted Co-Cu catalyst for higher alcohol synthesis from syngas..
MLA	Dong, Xin,et al."Preparation and characterization of carbon nanotube-promoted Co-Cu catalyst for higher alcohol synthesis from syngas".(2009).

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