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Citation: WU Ying-quan, XIE Hong-juan, KOU Yong-li, TAN Li, HAN Yi-zhuo, TAN Yi-sheng. Effect of calcination temperature on performance of K-Cu/Zn/La/ZrO2 for isobutanol synthesis[J]. Journal of Fuel Chemistry and Technology, ;2013, 41(7): 868-874. shu

Effect of calcination temperature on performance of K-Cu/Zn/La/ZrO2 for isobutanol synthesis

  • 1.

    1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

  • Corresponding author: TAN Yi-sheng, 
  • Received Date: 13 February 2013
    Available Online: 17 June 2013

    Fund Project: 中国科学院山西煤炭化学研究所前瞻性布局项目(2011SQZBJ13) (2011SQZBJ13) 国家重大科学仪器设备开发专项(2011YQl20039). (2011YQl20039)

  • K-promoted Cu/Zn/La/ZrO2 catalyst were prepared by coprecipitation methods. Hydrogenation of CO was used as a probe reaction to investigate the catalytic performance. Structure and surface properties of K-Cu/Zn/La/ZrO2 catalysts were characterized by XRD,TG,BET, NH3-TPD, H2-TPR, Raman and XPS technics. The results indicated that structure and specific surface had no direct relationship with the catalyst activity. Strong acidic sites of catalyst surface were not good for the formation of isobutanol. Synergy among Cu-Zn-Zr has an important effect on the activity of K-Cu/Zn/La/ZrO2 catalysts. When the calcinations temperature was at 450 ℃, synergistic effect of Cu-Zn-Zr became strongest and CuO could be reduced easily. Under the optimum calcination temperature, conversion of CO reached 69.47% and selectivity of isobutanol approached 19.09%. Methanol and isobutanol were the primary products and occupied 95.02% in the alcohol products.
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