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

ZHANG Guo-qiang; GUO Tian-yu; ZHENG Hua-yan; LI Zhong

Volume 44 Issue 6

Jun. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(6): 674-679

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.

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.

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.

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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

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Corresponding author: Tel/Fax: 0351-6018526, E-mail: lizhong@tyut.edu.cn
Received Date: 2016-02-26
Rev Recd Date: 2016-04-12

Available Online: 2021-01-23

Publish Date: 2016-06-10

Abstract

Abstract

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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References(25)

References

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