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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：女
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：环境学院
学科：环境科学与工程. 环境工程. 环境科学
办公地点：环境楼B511
电子邮箱：quzhenping@dlut.edu.cn
An investigation of Zr/Ce ratio influencing the catalytic performance of CuO/Ce 1-x Zr x O 2 catalyst for CO 2 hydrogenation to CH 3 OH
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论文类型：期刊论文
发表时间：2020-08-01
发表刊物：JOURNAL OF ENERGY CHEMISTRY
收录刊物：EI、SCIE
卷号：47
页面范围：18-28
ISSN号：2095-4956
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