高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (6): 1097.

• 研究快报 • 上一篇    下一篇

规整中孔TiO2微球的均相沉淀合成及其在环戊烯氧化反应中的应用

郭昌文, 戴维林, 曹勇, 范康年   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2003-01-04 出版日期:2003-06-24 发布日期:2003-06-24
  • 通讯作者: 戴维林(1969年出生),男,博士,副教授,从事多相催化和表面化学研究.E-mail:wldai@fudan.edu.cn E-mail:wldai@fudan.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20073009);上海市科委基础研究重点项目(批准号:02DJ14021);上海市教委曙光计划项目(批准号:02SG04)资助

Preparation of Core-shell Titania Spheroid with Mesoporous Structure and the Application in Synthesis of Glutaraldehyde

GUO Chang-Wen, DAI Wei-Lin, CAO Yong, FAN Kang-Nian   

  1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2003-01-04 Online:2003-06-24 Published:2003-06-24

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关键词: 二氧化钛, 微球, 环戊烯, 戊二醛, 氧化

Abstract: A novel process for preparation of micrometer-scale functional materials without organic templates has been demonstrated. Titania spheroid with a tailored core-shell structure and high ordered mesoposity has been manipulated in the ethanol hydrothermal system containing ammonia sulfate as a dispersant. Titania spheroid with a mean diameter of 3.6 μm and a high specific surface area of 266 m2/g has been synthesized by precipitating titanium tetrachloride with ammonia gas released from hydrolysis of urea at a high temperature. A special core-shell structure with a 100 nm thin shell and a 300 nm spacing strip interiors has been characterized by SEM & TEM. The catalytic performance of the titania spheoid supported WO3 catalyst for the selective oxidation of cyclopentene(CPE) to glutaraldehyde(GA) has been investigated. The WO 3/TiO2 spheroid catalyst displays an exciting prospect for good selectivity(72.9%) toward GA and a high GA yield(about 70%) for the titled reaction using aqueous H2O2 as the oxidant.

Key words: Titania, Spheroid, Cyclopentene, Glutaraldehyde, Oxidation

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