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Issue 18, 2017
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Tuning the metal–support interaction in supported K-promoted NiMo catalysts for enhanced selectivity and productivity towards higher alcohols in CO hydrogenation

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Abstract

Mixed metal oxide (MMO)-supported MoS2 catalysts with tunable size and morphology of active phases for higher alcohol synthesis (HAS) were prepared by using encapsulated Mo-based precursors with cetyltrimethylammonium bromide (CTAB). The Ni–KMoS/MMO catalysts show enhanced activity and superior selectivity towards higher alcohols to those prepared by the multiple impregnation method and co-impregnation method. That is, the K,Ni–30Mo/MMO catalyst exhibits a high space time yield (STY) of 253 mg per g catalyst per h for C2+ alcohols, which is about 3.2 and 1.51 times higher than those of IM-K,Ni–30Mo/MMO and co-IM-K,Ni–30Mo/MMO. The compromise between the dispersion and stacking of supported MoS2 slabs via adjusting the metal–support interaction is crucial to providing abundant Mo edges for dispersing Ni species to achieve more accessible active sites. The remarkable increase in the number of highly dispersed and contacted NiSx and Ni–KMoSx dual active sites will provide highly effective synergism, and thus gives this catalyst enhanced activity and exceptional selectivity towards higher alcohols in CO hydrogenation.

Graphical abstract: Tuning the metal–support interaction in supported K-promoted NiMo catalysts for enhanced selectivity and productivity towards higher alcohols in CO hydrogenation

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Publication details

The article was received on 29 Jun 2017, accepted on 25 Aug 2017 and first published on 25 Aug 2017


Article type: Paper
DOI: 10.1039/C7CY01295K
Citation: Catal. Sci. Technol., 2017,7, 4206-4215
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    Tuning the metal–support interaction in supported K-promoted NiMo catalysts for enhanced selectivity and productivity towards higher alcohols in CO hydrogenation

    J. Yong, X. Luan, X. Dai, X. Zhang, H. Qiao, Y. Yang and X. Huang, Catal. Sci. Technol., 2017, 7, 4206
    DOI: 10.1039/C7CY01295K

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