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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：有机化学
电子邮箱：jyjiang@dlut.edu.cn
The cascade synthesis of alpha,beta-unsaturated ketones via oxidative C-C coupling of ketones and primary alcohols over a ceria catalyst
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论文类型：期刊论文
发表时间：2016-01-01
发表刊物：CATALYSIS SCIENCE & TECHNOLOGY
收录刊物：SCIE、EI
卷号：6
期号：6
页面范围：1693-1700
ISSN号：2044-4753
摘要：We herein report the oxidative C-C coupling of ketones and primary alcohols to produce a, beta-unsaturated ketones in the absence of base additives. This cascade synthetic reaction was conducted at 150 degrees C in 12 h using a heterogeneous CeO2 catalyst. The conversion of acetophenone reached 74% with 89% selectivity to chalcone. A correlation between the CeO2 crystal plane and catalytic performance is established as the catalytic activities decrease in the sequence of (110) > (111) > (100). Characterization using Raman spectroscopy, CO2 temperature-programmed desorption (CO2-TPD), and in situ active site-capping tests has shown that the unusual catalysis of the CeO2 catalyst is attributed to the coexistence of basic and redox active sites. These sites synergistically catalyze the oxidation of alcohols to aldehydes and the aldol condensation to ketones. Moreover, the CeO2 catalyst can be reused several times after calcination to remove the surface-adsorbed substances.
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