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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：大连理工大学
学位：博士
所在单位：化工学院
学科：化学工程
办公地点：化工实验楼D209
联系方式：wangyao@dlut.edu.cn
电子邮箱：wangyao@dlut.edu.cn
Creation of Oxygen Vacancies in MoO3/SiO2 by Thermal Decomposition of Pre-Impregnated Citric Acid Under N-2 and Their Positive Role in Oxidative Desulfurization of Dibenzothiophene
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论文类型：期刊论文
发表时间：2014-03-01
发表刊物：CATALYSIS LETTERS
收录刊物：SCIE、EI、Scopus
卷号：144
期号：3
页面范围：531-537
ISSN号：1011-372X
关键字：Oxidative desulfurization; Dibenzothiophene; Cumene hydroperoxide; MoO3; Partial reduction
摘要：The XPS, XANES, and UV-Vis results revealed that oxygen vacancies were formed in the surface of MoO3/SiO2 by impregnation of the catalyst with citric acid followed by a temperature-programmed heating under N-2 atmosphere. The presence of the induction period during the oxidative desulfurization (ODS) of dibenzothiophene over these Mo-based catalysts using cumene hydroperoxide as the oxidant suggests that the reaction would follow a free radical mechanism. Both the higher ODS activity and the faster deactivation of the modified catalysts give evidences that the oxygen vacancies should possess a high ODS activity.