郭新闻

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:盘锦校区管委会副主任兼教学与科研工作部部长

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:工业催化. 物理化学

办公地点:化工实验楼B427

联系方式:18641143913

电子邮箱:guoxw@dlut.edu.cn

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Mesoporous/Microporous Titanium Silicalite with Controllable Pore Diameter for Cyclohexene Epoxidation

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论文类型:期刊论文

发表时间:2018-01-17

发表刊物:INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录刊物:SCIE、EI

卷号:57

期号:2

页面范围:512-520

ISSN号:0888-5885

摘要:A mesoporous/microporous titanium silicalite with controllable pore diameter was synthesized in an easy and new route by using cetyltrimethylammonium bromide (CTAB) as a mesoporous template and tetrapropylammonium hydroxide (TPAOH) as a microporous template. This route leads to the formation of mesopores prior to the crystallization of microporous MFI topology. The porosity formation sequence makes the two types of channels, which are micropores with MFI topology and mesopores with wormlike morphology, distribute homogeneously. The pore diameter of the mesopores can be adjusted from the maximum center of 2.6 nm to that of 6.9 nm by tuning the molar ratio of CTAB to silicon from 0.125 to 0.20. The mesoporous/ microporous titanium silicalite catalysts were evaluated in the epoxidation of cyclohexene, and showed excellent catalytic activities, with respect to the conventional microporous TS-1, because of the enhanced diffusion property in the mesopores and higher titanium content near the external surface of the former.