高等学校化学学报

高等学校化学学报

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高比表面积有序介孔氧化铝的制备与表征

李志平1, 赵瑞红2, 郭奋1, 陈建峰1, 王刚1   

    1. 北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室, 北京 100029;
    2. 河北科技大学化学与制药工程学院, 石家庄 050018
  • 收稿日期:2007-06-24 修回日期:1900-01-01 出版日期:2008-01-10 发布日期:2008-01-10
  • 通讯作者: 郭奋

Preparation and Characterization of Ordered Mesoporous Alumina with High Specific Surface Area with F127 as Template

LI Zhi-Ping1, ZHAO Rui-Hong2, GUO Fen1*, CHEN Jian-Feng1, WANG Gang1   

    1. Key Lab for Advanced Preparation Technology and Application with of Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China;
    2. School of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2007-06-24 Revised:1900-01-01 Online:2008-01-10 Published:2008-01-10
  • Contact: GUO Fen

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被引次数

67

摘要： 采用溶胶-凝胶法以非离子表面活性剂PEO-PPO-PEO三嵌段共聚物F127为模板剂, 以异丙醇铝为铝源, 以异丙醇为溶剂, 成功地制备出比表面积为485 m2/g、孔径分布窄(2~20 nm)、孔容在1.2 cm3/g以上和孔道呈蠕虫状且具有一定有序性的介孔氧化铝. 采用BET, TEM, XRD和TG多种测试技术对产物性能进行了表征. 探讨了水铝比、醇水混合溶液的滴加速度、反应时间、水浴温度、陈化温度及陈化时间等条件对合成的有序介孔氧化铝结构的影响.

关键词: PEO-PPO-PEO三嵌段共聚物F127, 有序介孔氧化铝, 高比表面积

Abstract: Ordered mesoporous alumina was synthesized by sol-gel method with isopropoxide alumina as the source of alumina and PEO-PPO-PEO block copolymer F127 as the template. The results show that the mesoporous alumina surface area(480 m2/g), narrow pore size distribution(2—20 nm), and lange pore volume(over 1.2 cm3/g). Worm-like pore was formed and ordered to some extent. The structure of the synthesized sample was investigated by BET, TEM, and XRD technologies. The influence of various conditions on the structure of ordered mesoporous alumina was discussed.

Key words: PEO-PPO-PEO block copolymer F127, Ordered mesoporous alumina, High specific surface aera

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