成果信息
An investigation of Zr/Ce ratio influencing the catalytic performance of CuO/Ce1-xZrxO2 catalyst for CO2 hydrogenation to CH3OH
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文献类型:期刊论文
标题:An investigation of Zr/Ce ratio influencing the catalytic performance of CuO/Ce1-xZrxO2 catalyst for CO2 hydrogenation to CH3OH
作者:Wang, Weiwei[1];Qu, Zhenping[2];Song, Lixin[2];Fu, Qiang[3]
机构:
通讯作者:Qu, Zhenping(quzhenping@dlut.edu.cn)
年:2020
期刊名称:Journal of Energy Chemistry影响因子和分区
来源信息:年:2020  卷:47  页码范围:18-28  
卷:47
页码范围:18-28
增刊:正刊
收录情况:EI(20195007828671)  
所属部门:环境学院;化工学院
语言:外文
ISSN:20954956
发表时间:2020-08-01
全文链接:DOI百度学术
人气指数:391
浏览次数:391
摘要:A series of CuO/Ce1-xZrxO2 catalysts (x = 0.2, 0.4, 0.6 and 0.8) are applied to elaborate the effect of the Zr/Ce ratio on the catalytic performance of CO2 hydrogenation to CH3OH. The best catalytic performance is achieved with CuO/Ce0.4Zr0.6O2, exhibiting XCO2 = 13.2% and YCH3OH = 9.47% (T = 280 ��C, P = 3 MPa). The formation of dispersed surface CuO species and larger number of oxygen vacancies are detected over CuO/Ce0.4Zr0.6O2 due to stronger interaction between CuO and Ce0.4Zr0.6O2, resulting in the superior activation ability for H2 and CO2 respectively. Additionally, the evidence is provided by in situ DRIFTS under the activity test pressure (3 MPa) that bi/m-HCOO* species are preferable for accumulating over ceria-rich (CuO/Ce0.6Zr0.4O2 and CuO/Ce0.8Zr0.2O2) catalysts while zirconia-rich (CuO/Ce0.4Zr0.6O2 and CuO/Ce0.2Zr0.8O2) catalysts are benefit to encourage the transformation of bi/m-HCOO* species to CH3OH. The abundant population and high activity of intermediate species over CuO/Ce0.4Zr0.6O2 give a strong positive effect on the catalytic performance. ? 2019
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