| 介孔二氧化钛负载硅钨杂多酸的制备及其催化性能 |
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| 引用本文： | 周华锋,刘玉萍,张丽清.介孔二氧化钛负载硅钨杂多酸的制备及其催化性能[J].过程工程学报,2012,12(3):522-526. |
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| 作者姓名： | 周华锋 刘玉萍 张丽清 |
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| 作者单位： | 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 |
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| 基金项目： | 辽宁省高校重点实验室基金资助项目 |
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| 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%.
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| 关 键 词： | 硅钨杂多酸 介孔二氧化钛 负载 催化 柠檬酸三丁酯 |
| 收稿时间： | 2012-1-30 |
| 修稿时间： | 2012-4-6 |
Preparation and Catalytic Activity of H4SiW12O40/TiO2 |
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| ZHOU Hua-feng
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LIU Yu-ping
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ZHANG Li-qing.Preparation and Catalytic Activity of H4SiW12O40/TiO2[J].Chinese Journal of Process Engineering,2012,12(3):522-526. |
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| Authors: | ZHOU Hua-feng LIU Yu-ping ZHANG Li-qing |
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| Affiliation: | Applied Chemistry College Shenyang Institute of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology |
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| 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. |
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| Keywords: | silicon tungsten heteropoly acid mesoporous titania loading catalysis tri-butyl citrate |
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