高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (3): 469.

• 论文 • 上一篇    下一篇

具有中孔结构的SO42-/Zr-HMS型固体超强酸的合成和结构表征

廖世军1, 季山1, 简弃非1, 王乐夫1, Vladimir Linkov2, Leslie Petrik2   

  1. 1. 华南理工大学应用化学系, 广州 510640;
    2. Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
  • 收稿日期:2002-04-29 出版日期:2003-03-24 发布日期:2003-03-24
  • 通讯作者: 廖世军(1958年出生),男,博士,教授,主要从事催化方面的研究工作.E-mail:chsjliao@scut.edu.cn E-mail:chsjliao@scut.edu.cn
  • 基金资助:

    广东省自然科学基金(批准号:990646,013024)资助

Preparation and Structure Characterization of a Mesoporous Solid Superacid Catalyst SO42-/Zr-HMS

LIAO Shi-Jun1, JI Shan1, JIAN Qi-Fei1, WANG Le-Fu1, Vladimir Linkov2, Leslie Petrik2   

  1. 1. Department of Applied Chemistry, South China University of Technology, Guangzhou 510640, China;
    2. Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
  • Received:2002-04-29 Online:2003-03-24 Published:2003-03-24

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摘要： 用TEOS-Zr-HAD-H2O-Ethanol体系合成了Zr-HMS的中孔分子筛,脱除模板剂后用0.5mol/L硫酸处理和550℃高温焙烧3h,制得一种中孔SO42-/Zr-HMS超强酸催化剂.采用XRD对其结构进行表征.用指示剂法、TG和NH3-TPD对其酸性进行了表征.结果表明,经过一系列处理后制得的SO42-/Zr-HMS催化剂具备HMS中孔分子筛的结构特征,其酸强度可达H0=-13.75.在锆及SO42-含量远远低于SO42-/ZrO2的条件下,SO42-/Zr-HMS催化剂对于苯酐和正丁醇酯化反应的活性仍高于SO42-/ZrO2催化剂.

关键词: 中孔分子筛, 超强酸, 制备, 表征

Abstract: A mesoporous solid superacid catalyst, SO42-/Zr-HMS, was prepared by sulfating the mesoporous Zr-HMS, which was synthesized from TEOS-zrconium-HDA-H2O-ethanol system, with aqueous solution of 0.5 mol/L H2SO4 followed by calcining at 550 ℃ for 3 h in static air. The structure of catalyst was characterized by XRD, and the acidity of the catalyst was investigated by Hammit indicator method, TG and NH3-TPD. It is shown that the catalyst SO42-/Zr-HMS possesses the structure of HMS and with the acid strength by -13.75(H0). The catalytic activity of SO42-/Zr-HMS in the esterification of phthalic anhydride with butanol is higher than that of SO42-/ZrO2.

Key words: Mesoporous zeolite, Superacid, Preparation, Characterization

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