| 介孔分子筛SiW_(12)/SBA-15催化合成柠檬酸三丁酯 |
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| 引用本文： | 武宝萍,何仲双,张秋荣,赵跃强.介孔分子筛SiW_(12)/SBA-15催化合成柠檬酸三丁酯[J].化工科技,2008,16(6). |
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| 作者姓名： | 武宝萍 何仲双 张秋荣 赵跃强 |
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| 作者单位： | 1. 淮海工学院,化工系,江苏,连云港,222005
2. 麻黄山乡政府,宁夏,盐池,750021 |
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| 基金项目： | 淮海工学院自然科学基金项目
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| 摘 要： | :将硅钨酸负载在纯硅介孔分子筛SBA-15的表面上,XRD结果表明负载型催化剂SiW12/SBA-15具有纯硅SBA-15的介孔结构.将该催化剂用于合成柠檬酸三丁酯的酯化反应.采用正交实验考察了反应温度、催化剂用量、酸醇摩尔比对柠檬酸转化率的影响,得出最佳反应条件为:反应温度120℃、催化剂用量为总物料质量的1.5%、酸醇摩尔比1:4.在此条件下反应4 h,柠檬酸转化率可达到91.5%,产物的纯度为99.3%.
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| 关 键 词： | 介孔分子筛 柠檬酸 正交实验 硅钨酸 |
Synthesis of tributyl citrate over mesoporous molecular sieve SiW_(12)/SBA-15 |
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| WU Bao-ping,HE Zhong-shuang,ZHANG Qiu-rong,Zhao Yue-qiang.Synthesis of tributyl citrate over mesoporous molecular sieve SiW_(12)/SBA-15[J].Science & Technology In Chemical Industry,2008,16(6). |
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| Authors: | WU Bao-ping HE Zhong-shuang ZHANG Qiu-rong Zhao Yue-qiang |
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| Affiliation: | WU Bao-ping~1,HE Zhong-shuang~2,ZHANG Qiu-rong~1,Zhao Yue-qiang~1 (1.Department of Chemical Engineering,Huaihai Institute of Technology,Lianyungang 222005,China,2.The Countryside Government of Mahuangshan,Yanchi 750021,China) |
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| Abstract: | The mesoporous molecular sieve SiW_(12)/SBA-15 functionlized with silicotungstic acid was prepared.The XRD results showed that the structure of SiW_(12)/SBA-15 catalyst remains that of silica mesoporous molecular sieve SBA-15.The synthesis of tributyl citrate from citric acid and butanol was carried over catalyst SiW_(12)/SBA-15.The influences of reaction temperature,ratio of citric acid to butanol, and the mass of catalyst on esterification performance were emphatically studied.The optimal reaction conditi... |
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| Keywords: | Mesoporous molecular sieve Citric acid Orthogonal test Silicotungstic acid |
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