Methanol synthesis from CO2 hydrogenation over La-M-Cu-Zn-O (M = Y, Ce, Mg, Zr) catalysts derived from perovskite-type precursors

被引：120
作者：
Zhan, Haijuan [1 ,2 ]
Li, Feng [1 ]
Gao, Peng [1 ,2 ]
Zhao, Ning [1 ]
Xiao, Fukui [1 ]
Wei, Wei [1 ,3 ]
Zhong, Liangshu [4 ]
Sun, Yuhan [1 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Chinese Acad Sci, Shanghai Adv Res Inst, Ctr Greenhouse Gas & Environm Engn, Shanghai 201203, Peoples R China
[4] Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201203, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2014年 / 251卷
关键词：
Perovskite; Carbon dioxide hydrogenation; Methanol; Sol-gel method; CARBON-DIOXIDE HYDROGENATION; GAS SHIFT REACTION; CU/ZNO/ZRO2; CATALYSTS; TOTAL OXIDATION; PERFORMANCE; CAPTURE; COPPER; OXIDES; XPS; REACTIVITY;
D O I：
10.1016/j.jpowsour.2013.11.037
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of La-M-Cu-Zn-O (M = Y, Ce, Mg, Zr) based perovskite-type catalysts are prepared by sol-gel method and characterized by XRD, BET, TPR, N2O-adsorption, XPS and TPD techniques. The results indicate that all the catalysts exhibit La2CuO4 perovskite structure. The addition of Ce, Mg and Zr lead to smaller particles, lower reduction temperature, higher Cu dispersion, larger amount of hydrogen desorption at low temperature and more amount of basic sites. However, Y has less affects on the physicochemical properties. The catalysts derived from perovskite-type precursors show high selectivity for methanol, which is correlated with the Cu alpha+ species that exists in the reduced catalysts. More exposed Cu surface area is favorable for high CO2 conversion. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：113 / 121
页数：9
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