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›› 2012, Vol. 12 ›› Issue (3): 522-526.

• 材料工程专栏 • 上一篇    下一篇

介孔二氧化钛负载硅钨杂多酸的制备及其催化性能

周华锋 刘玉萍 张丽清   

  1. 沈阳化工学院应用化学学院 沈阳化工学院应用化学学院 沈阳化工大学应用化学学院
  • 收稿日期:2012-01-30 修回日期:2012-04-06 出版日期:2012-06-20 发布日期:2012-06-20
  • 通讯作者: 周华锋

Preparation and Catalytic Activity of H4SiW12O40/TiO2

ZHOU Hua-feng LIU Yu-ping ZHANG Li-qing   

  1. Applied Chemistry College Shenyang Institute of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology
  • Received:2012-01-30 Revised:2012-04-06 Online:2012-06-20 Published:2012-06-20
  • Contact: ZHOU Hua-feng

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被引次数

28

摘要： 以介孔TiO2为载体，分别采用浸渍法和溶胶-凝胶法合成了2种负载型硅钨酸/介孔TiO2催化剂，对其结构进行了表征，将其用于柠檬酸三丁酯合成反应，考察了催化活性和重复使用性. 结果表明，用溶胶-凝胶法所制硅钨酸/介孔二氧化钛对柠檬酸三丁酯的合成反应具有很好的催化活性和重复使用性，重复使用6次，260 min时柠檬酸转化率可达86.49%.

关键词: 硅钨杂多酸, 介孔二氧化钛, 负载, 催化, 柠檬酸三丁酯

Abstract: Two kinds of H4SiW12O40/TiO2 were synthesized by impregnation and sol-gel methods respectively with meseporous titania. Their structures were characterized by IR, TGA-DSC and N2 adsorption?desorption. Their catalytic activities in synthesis of tri-butyl citrate were studied. The results show that the H4SiW12O40/TiO2 synthesized by sol-gel method shows good catalytic activity and reusability in synthesis of tri-butyl citrate. The conversion rate of citric acid reaches 86.49% in 260 min when H4SiW12O40/TiO2(sol-gel) is reused in six times.

Key words: silicon tungsten heteropoly acid, mesoporous titania, loading, catalysis, tri-butyl citrate

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