Influence of fluorine on the performance of fluorine-modified Cu/Zn/Al catalysts for CO2 hydrogenation to methanol

被引：58

作者：

Gao, Peng ^{[1
,2
]}

Li, Feng ^{[1
]}

Zhang, Lina ^{[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 CO2 UTILIZATION | 2013年 / 2卷

关键词：

Hydrotalcite-like; Fluorine; Cu/Zn/Al catalyst; CO2; hydrogenation; Methanol synthesis;

D O I：

10.1016/j.jcou.2013.06.003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fluorine-modified Cu/Zn/Al catalyst was prepared by calcination of the fluorine-containing Cu/Zn/Al hydrotalcite-like precursor and tested for CO2 hydrogenation to methanol. The introduction of fluorine into Cu/Zn/Al catalyst led to lower CO2 conversion mainly due to the decrease of the exposed copper surface area. However, the turnover frequency increased remarkably owing to the higher amount of easily reducible CuO. In addition, the CH3OH selectivity was greatly improved by the remarkable increase of the proportion of strongly basic sites to the total basic sites. As a result, the presence of fluorine in Cu/Zn/Al catalyst was favorable for CO2 hydrogenation to methanol, and the CH3OH yield for the fluorine-modified Cu/Zn/Al catalyst was higher than that for the fluorine-free Cu/Zn/Al catalyst. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：16 / 23

页数：8

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