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	Co-decorated carbon nanotubes as a promoter of Co-Mo-K oxide catalyst for synthesis of higher alcohols from syngas
	Wu, Xiao-Man ; Guo, Yan-Yan ; Zhou, Jin-Mei ; Lin, Guo-Dong ; Dong, Xin ; Zhang, Hong-Bin ; Zhang HB(张鸿斌)
	2008-02
关键词	Co-decorated carbon nanotubes Co-Mo-K catalyst higher alcohol synthesis
英文摘要	A metal cobalt-decorated multi-walled carbon nanotube (MWCNT) -promoted Co-Mo-K oxide-based catalyst was developed, with excellent performance for the selective formation Of C2-9-alcohols from syngas. Under reaction condition of 5.0 MPa and 593 K, the space-time-yield of C2-9-alcohols reached 628 mg/(g h) over the Co1Mo1K0.05-12%(4.2% Co/MWCNT) catalyst. The addition of a minor amount of the Co-decorated MWCNTs into the Co1Mo1K0.05 host catalyst caused little change in the apparent activation energy for the higher alcohol synthesis (HAS), but led to an increase of surface concentration of the two kinds of catalytically active species, CoO(OH)/Co3O4 and Mo4+, both closely associated with the alcohol generation. Addition of 5% CO2 in the feed gas at properly elevated reaction temperature (593 K) could further enhance the surface concentration of those active Mo and Co species. An excellent adsorption performance of the Co-decorated MWCNTs as promoter for H-2 would be conducive to generating 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. In addition, high concentration of H-adspecies on the catalyst would, through synergistic action with the CO2 in the feed gas, greatly inhibit the water-gas-shift side-reaction. All these factors contribute 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.apcata.2007.09.051]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wu, Xiao-Man,Guo, Yan-Yan,Zhou, Jin-Mei,et al. Co-decorated carbon nanotubes as a promoter of Co-Mo-K oxide catalyst for synthesis of higher alcohols from syngas[J],2008.
APA	Wu, Xiao-Man.,Guo, Yan-Yan.,Zhou, Jin-Mei.,Lin, Guo-Dong.,Dong, Xin.,...&张鸿斌.(2008).Co-decorated carbon nanotubes as a promoter of Co-Mo-K oxide catalyst for synthesis of higher alcohols from syngas..
MLA	Wu, Xiao-Man,et al."Co-decorated carbon nanotubes as a promoter of Co-Mo-K oxide catalyst for synthesis of higher alcohols from syngas".(2008).

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