| H3PW6Mo6O40/SiO2催化合成苯甲醛1,2-丙二醇缩醛 |
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| 引用本文： | 杨水金,卫杨帆,黄永葵.H3PW6Mo6O40/SiO2催化合成苯甲醛1,2-丙二醇缩醛[J].商丘师范学院学报,2012(3):64-67. |
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| 作者姓名： | 杨水金 卫杨帆 黄永葵 |
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| 作者单位： | 湖北师范学院化学与环境工程学院 |
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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： | 以二氧化硅负载磷钼钨酸H3PW6Mo6O40/SiO2为催化剂,苯甲醛和1,2-丙二醇为原料合成苯甲醛1,2-丙二醇缩醛.探讨H3PW6Mo6O40/SiO2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、带水剂用量、反应时间等因素对产品收率的影响.实验表明:H3PW6Mo6O40/SiO2是合成苯甲醛1,2-丙二醇缩醛的良好催化剂,在n(苯甲醛)∶n(1,2丙二醇)=1∶1.5,催化剂用量为占总反应物质量的1.0%,带水剂环己烷用量10 mL,反应时间45 min的最佳条件下,苯甲醛1,2-丙二醇缩醛的收率可达83.3%.
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| 关 键 词： | 苯甲醛1 2-丙二醇缩醛 H3PW6Mo6O40/SiO2 催化 |
Catalytic synthesis of benzaldehyde 1,2-propanediol acetal by H3PW6Mo6O40/SiO2 |
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| YANG Shuijin,WEI Yangfan,HUANG Yongkui.Catalytic synthesis of benzaldehyde 1,2-propanediol acetal by H3PW6Mo6O40/SiO2[J].Journal of Shangqiu Teachers College,2012(3):64-67. |
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| Authors: | YANG Shuijin WEI Yangfan HUANG Yongkui |
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| Institution: | (College of Chemistry and Environmental Engineering,Hubei Normal University,Huangshi 435002,China) |
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| Abstract: | Benzaldehyde 1,2-propanediol acetal was synthesized from benzaldehyde and 1,2-propanediol in the presence of H3PW6Mo6O40/SiO2 as catalyst.The factors influencing the synthesis were discussed and the best reaction conditions were found out.Experimental results showed that H3PW6Mo6O40/SiO2 is an excellent catalyst.The optimum conditions are: molar ratio of benzaldehyde to 1,2-propanediol is 1∶1.5,the quantity of catalyst is equal to 1.0% of feed stocks,the volume of cyclohexane as the water-carrying agent is 10 mL and the reaction time is 45 min.Under these conditions,the yield of benzaldehyde 1,2-propanediol acetal can reach 83.3 %. |
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| Keywords: | benzaldehyde 1 2-propanediol acetal H3PW6Mo6O40/ SiO2 catalysis |
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