| SiW_(12)/SBA-15介孔分子筛催化合成月桂酸乙酯 |
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| 引用本文： | 武宝萍,张秋荣,赵越强,宋长生.SiW_(12)/SBA-15介孔分子筛催化合成月桂酸乙酯[J].化工技术与开发,2009,38(1). |
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| 作者姓名： | 武宝萍 张秋荣 赵越强 宋长生 |
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| 作者单位： | 淮海工学院化工学院,江苏,连云港,222005 |
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| 基金项目： | 淮海工学院校科研和教改项目 |
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| 摘 要： | 用传统的水热合成法制备纯硅介孔分子筛SBA-15,将SiW12负载在SBA-15上.采用X射线衍射(XRD)、红外光谱(IR)对不同负载量的催化剂进行了表征.表征结果表明,催化剂SiW12/SBA-15仍具有纯硅SBA-15的介孔结构,SiW12的Keggin结构保持完整.该催化剂用于月桂酸与乙醇的酯化反应,重点考察了硅钨酸的负载量、反应温度、酸醇比、催化剂用量等因素对酯化反应性能的影响.得到最佳反应条件为:硅钨酸的负载量为25%,反应温度90 ℃,酸醇比1:2.5,催化剂用量为月桂酸质量的1%,反应时间4 h.催化剂再生实验结果认为,SiW12/SBA-15介孔分子筛具有良好的再生性能和稳定性.
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| 关 键 词： | 表征 酯化反应 稳定性 月桂酸乙酯 |
Synthesis of Ethyl Laurate over SiW_(12)/SBA-15 Mesoporous Molecular Sieve |
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| WU Bao-ping,ZHANG Qiu-rong,ZHAO Yue-qiang,SONG Chang-sheng.Synthesis of Ethyl Laurate over SiW_(12)/SBA-15 Mesoporous Molecular Sieve[J].Technology & Development of Chemical Industry,2009,38(1). |
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| Authors: | WU Bao-ping ZHANG Qiu-rong ZHAO Yue-qiang SONG Chang-sheng |
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| Affiliation: | Department of Chemical Engineering;Huaihai Institute of Technology;Lianyungang 222005;China |
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| Abstract: | The mesoporous molecular sieves SBA-15 was prepared by traditional hydro-thermal synthesis process,which was functionlized with SiW12 heteropoly acids.Characterizations by X-ray diffraction(XRD),infrared spectroscopy(IR) had been carried out to understand the physical properties of SiW12/SBA-15.The result showed that the structure of SiW12/SBA-15 catalyst remained that of all silica mesoporous material SBA-15 and the Keggin of SiW12 kept fine.The ethyl laurate was prepared over SiW12/SBA-15 catalyst.The inf... |
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| Keywords: | H4SiW12O40 |
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