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

被引：57

作者：

Yang, Bin ^{[1
]}

Deng, Wei ^{[1
]}

Guo, Limin ^{[1
]}

Ishihara, Tatsumi ^{[2
,3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan 430074, Hubei, Peoples R China

[2] Kyushu Univ, Int Inst Carbon Neutral Energy Res, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[3] Kyushu Univ, Fac Engn, Dept Appl Chem, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

来源：

CHINESE JOURNAL OF CATALYSIS | 2020年 / 41卷 / 09期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Copper-ceria; Solid solution; CO2; hydrogenation; Methanol; Active site; METHANOL SYNTHESIS; CU/ZNO/AL2O3; CATALYSTS; SURFACE-AREA; OXIDATION; H-2; IDENTIFICATION; CHEMISORPTION; INTERFACE; TOLUENE; SITES;

D O I：

10.1016/S1872-2067(20)63605-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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, H-2 temperature-programmed reduction, and CO adsorption), the interfaces of the prepared catalysts were classified as Cu incorporated into ceria (Cu-Ov-Cex), 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-Ov-Cex 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-Ov-Cex fraction. (c) 2020, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：1348 / 1359

页数：12

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