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二氧化硅负载硅钨钼酸催化合成异丁醛1,2-丙二醇缩醛

YANG Shuijin,YU Li,YIN Qiaoqiao

Journal of Shangqiu Normal University（2013）

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Abstract
以H4SiW6Mo6O40/SiO2为催化剂,通过异丁醛和1,2-丙二醇为原料合成异丁醛1,2-丙二醇缩醛,探讨了H4SiW6Mo6O40/SiO2催化剂对缩醛反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素对产品收率的影响.实验表明:H4SiW6Mo6O40/SiO2是合成异丁醛1,2-丙二醇缩醛的良好催化剂,在n(1,2-丙二醇)∶n(异丁醛)=1.5∶1,催化剂用量为反应物料总质量的1.2%,环己烷为带水剂,反应时间1.0 h的优化条件下,异丁醛1,2-丙二醇缩醛的收率可达75.2%.
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Key words
catalysis,H4SiW6Mo6O40/SiO2,2-propanediol acetal,iso-butyraldehyde 1,acetalation
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