| 硅胶负载硅钨酸催化合成丁醛乙二醇缩醛 |
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| 引用本文： | 徐明波,龚君,杨水金.硅胶负载硅钨酸催化合成丁醛乙二醇缩醛[J].湖北师范学院学报(自然科学版),2011,31(3):21-24. |
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| 作者姓名： | 徐明波 龚君 杨水金 |
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| 作者单位： | 湖北师范学院化学与环境工程学院,湖北黄石,435002 |
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| 基金项目： | 湖北省教育厅中青年科研基金资助项目(Q20112507) |
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| 摘 要： | 以硅胶负载硅钨酸为催化剂,丁醛和乙二醇为原料合成丁醛乙二醇缩醛。探讨硅胶负载硅钨酸对缩醛反应的催化活性,较系统地研究了醛醇物质的量比、催化剂用量、反应时间等因素对产物收率的影响。实验表明:硅胶负载硅钨酸是合成丁醛乙二醇缩醛的良好催化剂,在固定丁醛为0.2mol,催化剂用量为0.3g,n(丁醛)∶n(乙二醇)=1∶1.5,带水剂环己烷6mL,反应时间45 min的适宜条件下,丁醛乙二醇缩醛的收率可达78.3%.
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| 关 键 词： | 丁醛乙二醇缩醛 硅胶负载硅钨酸 催化 |
Catalytic synthesis of butyraldehyde glycol acetal by H_4SiW_(12)O_(40)/silica gel |
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| XU Ming-bo,GONG Jun,YANG Shui-jin.Catalytic synthesis of butyraldehyde glycol acetal by H_4SiW_(12)O_(40)/silica gel[J].Journal of Hubei Normal University(Natural Science),2011,31(3):21-24. |
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| Authors: | XU Ming-bo GONG Jun YANG Shui-jin |
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| Institution: | XU Ming-bo,GONG Jun,YANG Shui-jin (College of Chemistry and Environmental Engineering,Hubei Normal University,Huangshi 435002,China) |
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| Abstract: | Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol in the presence of H4SiW12O40/silica gel as catalyst.The factors influencing the synthesis were discussed and the best reaction conditions were found out.Experimental results showed that H4SiW12O40/silica gel is an excellent catalyst.The optimum conditions are： the quantity of catalyst is 0.3g,molar ratio of butyraldehyde to glycol is 1∶1.5,the volume of cyclohexane as the water-carrying agent is 6 mL,and the reaction time is 45 min,the yield of its can reach 78.3 %. |
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| Keywords: | butyraldehyde glycol acetal H4SiW12O40/silica gel catalysis |
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