Citation: Xiaosu Dong, Feng Li, Ning Zhao, Yisheng Tan, Junwei Wang, Fukui Xiao. CO₂ hydrogenation to methanol over Cu/Zn/Al/Zr catalysts prepared by liquid reduction[J]. Chinese Journal of Catalysis, ;2017, 38(4): 717-725. doi: 10.1016/S1872-2067(17)62793-1 shu

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

Xiaosu Dong ^a,b, ,
Feng Li ^a ,
Ning Zhao ^a,c ,
Yisheng Tan ^a,c ,
Junwei Wang ^a,c ,
Fukui Xiao ^a,c

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 Date: 18 December 2016
Revised Date: 23 January 2017

Fund Project: 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).

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.
- Liquid reduction method,
- Cu/Zn/Al/Zr catalyst,
- Carbon dioxide hydrogenation,
- Methanol
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CO₂ hydrogenation to methanol over Cu/Zn/Al/Zr catalysts prepared by liquid reduction