Citation: Bin Yang, Wei Deng, Limin Guo, Tatsumi Ishihara. Copper-ceria solid solution with improved catalytic activity for hydrogenation of CO₂ to CH₃OH[J]. Chinese Journal of Catalysis, ;2020, 41(9): 1348-1359. doi: 10.1016/S1872-2067(20)63605-1 shu

Copper-ceria solid solution with improved catalytic activity for hydrogenation of CO₂ to CH₃OH

a School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;
b International Institute for Carbon-Neutral Energy Research, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 8190395, Japan;
c Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 8190395, Japan

Received Date: 15 January 2020
Revised Date: 26 February 2020

Fund Project: The work was financially supported by National Natural Science Foundation of China (21878116), Natural Science Foundation of Hubei Province (2019CFA070), National Key R&D program of China (2017YFE0127400) and Program for Huazhong University of Science and Technology (HUST) Academic Frontier Youth Team (2018QYTD03).

A copper-ceria solid solution and ceria-supported copper catalysts were prepared and used for the catalytic hydrogenation of CO₂ to CH₃OH. According to site-specific classification and quantitative analyses (X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, H₂ temperature-programmed reduction, and CO adsorption), the interfaces of the prepared catalysts were classified as Cu incorporated into ceria (Cu-O_v-Ce_x), dispersed CuO (D-CuO-CeO₂), and bulk CuO (B-CuO-CeO₂) over the CeO₂ surface. These results, together with those of activity tests, showed that the Cu-O_v-Ce_x species was closely related to the CO₂ hydrogenation activity and resulted in a much higher turnover frequency of CH₃OH production than that observed with the D-CuO-CeO₂ and B-CuO-CeO₂ species. Thus, the copper-ceria solid solution exhibited improved activity due to the higher Cu-O_v-Ce_x fraction.
- Copper-ceria,
- Solid solution,
- CO₂ hydrogenation,
- Methanol,
- Active site
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通讯作者: 陈斌, bchen63@163.com

Copper-ceria solid solution with improved catalytic activity for hydrogenation of CO₂ to CH₃OH