Citation: ZHANG Guo-qiang, GUO Tian-yu, ZHENG Hua-yan, LI Zhong. Effect of calcination temperature on catalytic performance of CuCe/AC catalysts for oxidative carbonylation of methanol[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(6): 674-679. shu

Effect of calcination temperature on catalytic performance of CuCe/AC catalysts for oxidative carbonylation of methanol

Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: LI Zhong, lizhong@tyut.edu.cn
Received Date: 26 February 2016
Revised Date: 12 April 2016

Figures(6)

The CuCe/AC catalysts were prepared by impregnation first with Ce and then with Cu, and effect of calcination temperature on catalytic performance of the CuCe/AC catalysts for gas-phase oxidative carbonylation of methanol to dimethyl carbonate was studied. The active component content and valence state of as-prepared catalysts were characterized by XRD, XPS and H₂-TPR. The results show that Cu²⁺ is gradually reduced to Cu⁺ and Cu⁰ species. After calcinated at 450℃, some Cu₂O phase still exists in the catalyst, which indicates that interaction between Cu and Ce has suppressed the reduction of Cu₂O. As the calcination temperature of 300℃, the content of Cu⁺ achieves the highest, and the corresponding catalyst shows the best catalytic activity. The space-time yield of DMC, selectivity of DMC and conversion of methanol are 143.4mg/(g·h), 85.2% and 4.1%, respectively.
- dimethylcarbonate,
- CuCe/AC catalyst,
- calcination temperature,
- active component
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