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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学成都研究院院长
性别：男
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：化工学院
学科：化学工艺. 物理化学. 功能材料化学与化工
办公地点：大连理工大学西部校区化工综合楼A401室
联系方式：辽宁省大连市高新区凌工路2号，邮编116024
电子邮箱：changhai@dlut.edu.cn
Cleavage of Lignin-Derived 4-O-5 Aryl Ethers over Nickel Nanoparticles Supported on Niobic Acid-Activated Carbon Composites
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论文类型：期刊论文
发表时间：2015-03-04
发表刊物：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
收录刊物：SCIE、EI、Scopus
卷号：54
期号：8
页面范围：2302-2310
ISSN号：0888-5885
摘要：Cleavage of lignin-derived 4-O-5 aryl ethers has been conducted over nickel nanoparticles supported on niobic acid-activated carbon composite under mild conditions. The hydrated niobic acid has been successfully supported and well dispersed on activated carbon. Due to the coexisting Bronsted and Lewis acid sites on the hydrated niobic oxide, the Ni/xNbAC catalysts exhibited higher activities for cleavage of C-O ether bonds and dehydration than those of the Ni/AC catalyst. With increasing content of niobic acid, a larger amount of O-free alkane is obtained owing to niobic acid-promoted removal of oxygen from lignin-derived aryl ethers. The cleavage of C-O ether bonds and dehydration of cyclohexanol to cyclohexane are both favored at high temperature. The direct cleavage of the 4-O-5 aryl ether bond can also be achieved under low H-2 pressure, forming phenol and benzene as intermediates, followed by hydrodeoxygenation of phenol to cyclohexane.