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Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (1): 118.

• Articles • Previous Articles     Next Articles

Effect of Si/Al Ratio on the Performance of Cu-Zn-Si-Al Catalyst Prepared by Complete Liquid\|phase Technology for Dimethyl Ether Synthesis from Syngas

HUANG Wei*, SONG Ya-Jun, FAN Jin-Chuan, YIN Li-Hua   

  1. Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2010-05-05 Revised:2010-11-02 Online:2011-01-10 Published:2010-12-11
  • Contact: Wei HUANG E-mail:huangwei@tyut.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20706039, 20471040)和国家“九七三”计划项目(批准号: 2005CB221204)资助.

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Abstract: A series of CuZnAlSi bifunctional catalysts with different Si/Al ratio were prepared by a complete liquid phase method and the catalytic performance was evaluated in a slurry reactor. The catalysts were characterized by means of XRD, NH3-TPD-MS, H2-TPR and XPS. The results showed that Cu species was present as low-valence in the catalysts prepared by complete liquid-phase technology. The grain size of Cu had major impact on the catalytic activity. The change of Si/Al ratio led to the change of acid amount and acid strength, thereby influence the selectivity of catalysts. Adjusting the Si / Al ratio can improve the stability of catalysts. When the Si/Al ratio equaled to 1/2, the catalyst can obtain good performance.

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