Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (4): 717-725.DOI: 10.1016/S1872-2067(17)62793-1

• Articles • Previous Articles     Next Articles

CO2 hydrogenation to methanol over Cu/Zn/Al/Zr catalysts prepared by liquid reduction

Xiaosu Donga,b, Feng Lia, Ning Zhaoa,c, Yisheng Tana,c, Junwei Wanga,c, Fukui Xiaoa,c   

  1. a State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China;
    c National Engineering Research Center for Coal-Based Synthesis, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China
  • Received:2016-12-18 Revised:2017-01-23 Online:2017-04-18 Published:2017-04-12
  • Supported by:

    This work was supported by the Key Science and Technology Program of Shanxi Province, China (MD2014-10), the National Key Technology Research and Development Program (2013BAC11B00), and the National Natural Science Foundation of China (21343012).

Abstract:

Cu/Zn/Al/Zr catalysts containing Cu in three valence states (Cu2+, Cu+ and Cu0) were prepared using a liquid reduction method and subsequently calcined at different temperatures. The effects of the calcination temperature on the catalyst structure, interactions among components, reducibility and dispersion of Cu species, surface properties and exposed Cu surface area were systematically investigated. These materials were also applied to the synthesis of methanol via the hydrogenation of CO2. The results show that a large exposed Cu surface area promotes catalytic CO2 conversion and that there is a close correlation between the Cu+/Cu0 ratio and the selectivity for methanol. A calcination temperature of 573 K was found to produce a Cu/Zn/Al/Zr catalyst exhibiting the maximum activity during the synthesis of methanol.

Key words: Liquid reduction method, Cu/Zn/Al/Zr catalyst, Carbon dioxide hydrogenation, Methanol