| 硅胶负载磷钨酸催化合成苯甲醛乙二醇缩醛 |
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| 引用本文： | 杨水金,吴君,杨才峰.硅胶负载磷钨酸催化合成苯甲醛乙二醇缩醛[J].精细与专用化学品,2010,18(5):45-47. |
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| 作者姓名： | 杨水金 吴君 杨才峰 |
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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： | 湖北省自然科学基金资助项目(2005ABA053) |
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| 摘 要： | 报道了以硅胶负载磷钨酸（H_3PW_（12）O_（40））/SG为催化剂,将苯甲醛和乙二醇反应合成苯甲醛乙二醇缩醛;探讨了H_3PW_（12）O_（40）/SG对缩醛反应的催化活性,较系统地研究了醇醛物质的量比、催化剂用量、反应时间、带水剂用量对产物收率的影响。通过正交实验优选反应条件：在n（苯甲醛）：n（乙二醇）=1：1.6,m（催化剂）：m（反应物料总量）=0.5%,带水剂环己烷8mL,反应时间30min的优化条件下,苯甲醛乙二醇缩醛的收率可达到74.9%。
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| 关 键 词： | 苯甲醛乙二醇缩醛 磷钨酸 硅胶 催化 |
Catalytic synthesis of benzaldehyde glycol acetal with H3 PW12 O40/SG |
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| YANG Shui-jin,WU Jun,YANG Cai-feng.Catalytic synthesis of benzaldehyde glycol acetal with H3 PW12 O40/SG[J].Fine and Specialty Chemicals,2010,18(5):45-47. |
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| Authors: | YANG Shui-jin WU Jun YANG Cai-feng |
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| Affiliation: | College of Chemistry and Environmental Engineering/a>;Hubei Normal University/a>;Huangshi 435002/a>;China |
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| Abstract: | Benzaldehyde glycol acetal was synthesized from benzaldehyde and glycol,using phosphotungstic acid supported on silica gel(H_3PW_(12)O_(40)/SG) as catalyst.The factors influencing the synthesis were discussed and the best conditions were found out by orthogonal experiment.The optimum conditions were as follow:molar ratio of benzaldehyde to glycol is 1-1.6,the quantity of catalyst is equal to 0.5%of feed stocks,the volume of cyclohexane as the water-carrying agent is 8mL,and the reaction time is 30 min.H_3PW... |
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| Keywords: | benzaldehyde glycol acetal H3PW12O40 silica gel catalysis |
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