高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (4): 591.

• 论文 • 上一篇    下一篇

SO42-/ZrO2超强酸制备方法的改进

缪长喜, 陈建民, 高滋   

  1. 复旦大学化学系, 上海, 200433
  • 收稿日期:1994-06-23 修回日期:1994-10-28 出版日期:1995-04-24 发布日期:1995-04-24
  • 通讯作者: 高滋
  • 作者简介:缪长喜,男,25岁,博士研究生.
  • 基金资助:

    国家基础研究重大课题;中国石油化学工业总公司发展基金

An Improvement on the Preparation of SO42-/ZrO2Superacid

MIAO Chang-Xi, CHEN Jian-Min, GAO Zi   

  1. Department of Chemistry, Fudan University, Shanghai, 200433
  • Received:1994-06-23 Revised:1994-10-28 Online:1995-04-24 Published:1995-04-24

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摘要： 用BET、XRD、流动指示剂法、化学分析、低温正丁烷异构化反应等手段研究了制备条件对ZrO2前驱体和SO42-/ZrO2超强酸性能的影响。实验结果表明,采用不同的制备条件,ZrO2前驱体的比表面可相差1.8倍,SO42-/ZrO2的酸强度相差约1000倍。SO42-/ZrO2的正丁烷异构化反应活性相差约300倍。ZrO2最高比表面可达245m2/g,SO42-/ZrO2酸强度为H0≤-1.60,20℃时SO42-/ZrO2正丁烷异构化反应速率常数为15.5×10-3h-1.

关键词: ZrO2前驱体, SO42-/ZrO2超强酸, 比表面, 酸强度, 正丁烷异构化活性

Abstract: The effects of preparative conditions on the properties of ZrO2precursor and SO42-/ZrO2superacid were studied in detail by means of BET,XRD,flow Hammett indicator method, hemical analysis and butane isomerization reaction at low temperature. Under different conditions. the specific surface area of ZrO2precursor may differ by a factor of 1.8,while the acid strength and the rate constant for butane isomerization at 20℃ of SO42-/ZrO2superacid may differ approximately by a factor of 1000 and 300, respectively. When appropriate preparative conditions are selected, the maximum specific surface area of ZrO2obtained is 245 m2/g and the maximum acid strength and rate constant for butane isomerization at 20℃ are H0≤-16. 0 and 15. 5×10-3h-1,respectively.

Key words: ZrO2precursor.SO42-/ZrO2superacid, Specific surface area, Acid strength, Activity of butane isomerization

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