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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：校长助理
其他任职：精细化工国家重点实验室副主任，辽宁省低碳资源高值化利用重点实验室主任
性别：男
毕业院校：中科院山西煤化所
学位：博士
所在单位：化工学院
学科：工业催化. 化学工艺. 能源化工
办公地点：大连市凌工路2号大连理工大学西部校区化工楼，邮编：116024
联系方式：0411-84986112
电子邮箱：anhuilu@dlut.edu.cn
Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation
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论文类型：期刊论文
发表时间：2018-01-21
发表刊物：CATALYSIS SCIENCE & TECHNOLOGY
收录刊物：SCIE、EI
卷号：8
期号：2
页面范围：472-479
ISSN号：2044-4753
摘要：We report a designed Cu/C/SiO2 composite catalyst, which shows a high acetaldehyde selectivity (up to similar to 98%) and good stability for a 60 h test at 260 degrees C in ethanol dehydrogenation. Various characterization techniques demonstrate that the carbon covers the Si-OH groups on silica and promotes the reduction of Cu+ to Cu-0. This reduces the concentration of active sites for secondary reactions of CH3CHO, which leads to a high initial selectivity (similar to 93%) as compared to that of Cu/SiO2 (similar to 76%). Moreover, the chemical interaction between Cu and SiO2 of the C/SiO2 support, verified by X-ray photoelectron spectroscopy, enhances the interaction between the metal and the support and thus contributes to prevention of the agglomeration of Cu particles, which is the reason for the good catalytic stability of Cu/C/SiO2. Thus, this study is an example of how careful design of the catalyst can strongly improve the catalytic performance.