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The Structure Properties of CuZnAl Slurry Catalysts Prepared by a Complete Liquid-Phase Method and its Catalytic Performance for DME Synthesis from Syngas

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Abstract

Four CuZnAl slurry catalysts with different contents of Al were directly prepared from the solution of these metal salts to catalyst slurry by a complete liquid-phase method. The structure properties of the catalysts were characterized by XRD, BET, XPS, FTIR, and their catalytic performances for the single-step synthesis of Dimethyl ether (DME) from syngas were evaluated in a slurry reactor of 250 mL with a mechanical magnetic agitator. The results indicate the main phase existed in the catalysts are Cu, Cu2O, ZnO and boehmite (AlOOH) and the structures of pore and surface are comparable with those of the commercial methanol synthesis catalysts. Activity tests show that the slurry catalysts are quite effective for the single-step synthesis of DME from syngas. Among them, the catalyst with 2.09 mol% Al is best, whose DME selectivity reaches 93.08%. All of the catalysts prepared by the novel method exhibit good stability during the reaction time investigated for 18 days.

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Acknowledgments

The authors gratefully acknowledge the financial support of this study by the National Natural Science Foundation of China (Grant No. 20706039), the National Basic Research Program of China (Grant No. 2005CB221204), Changjiang Scholars and Innovative Research Team in University of China (Grant No. IRT0517) and the Young Scientific and Technical Fund of Shanxi, China (Grant No. 2006021010).

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Authors and Affiliations

  1. Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi province, Taiyuan University of Technology, Taiyuan, 030024, China

    Zhihua Gao, Wei Huang, Lihua Yin, Lifeng Hao & Kechang Xie

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  1. Zhihua Gao
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  2. Wei Huang
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  3. Lihua Yin
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  4. Lifeng Hao
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  5. Kechang Xie
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Correspondence to Wei Huang.

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Gao, Z., Huang, W., Yin, L. et al. The Structure Properties of CuZnAl Slurry Catalysts Prepared by a Complete Liquid-Phase Method and its Catalytic Performance for DME Synthesis from Syngas. Catal Lett 127, 354–359 (2009). https://doi.org/10.1007/s10562-008-9689-9

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  • DOI: https://doi.org/10.1007/s10562-008-9689-9

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