摘要
以SO42--TiO2/A l2O3固体超强酸催化剂,通过环己酮和1,3-丙二醇的缩合反应,研究合成了环己酮1,3-丙二醇缩酮,较系统地研究了催化剂的活化温度、TiO2的负载量、催化剂用量、反应物配比、带水剂对缩合反应的影响。结果表明,在环己酮和1,3-丙二醇的缩合反应中,SO42--TiO2/A l2O3固体超强酸催化剂具有良好的催化活性和稳定性,催化剂的活化温度为500℃,TiO2的负载量为10%;n(环己酮)∶n(1,3-丙二醇)=1∶1.2,催化剂的用量1.0g,甲苯为带水剂,反应时间1.5 h。在最佳条件下,缩酮的产率可达99.1%,产品纯度为99.6%。
The cyclohexanone 1,3-propanediol ketal is synthesized from cyclohexanone and 1,3-propanediol in the presence of SO4^2- -TiO2/Al2O3 solid superacid catalyst. The effects of catalyst activating temperature ,TiO2 loading amounts, dosage of catalyst, ratio of reactants, kinds and amounts of water carrying agent on reaction were examined. It was shown that the SO4^2- -TiO2/Al2O3 solid superacid catalyst has high catalytic activities and good stability ; the activating temperature of catalyst was 500℃, the TiO2 loading amount was 10% ; n（cyclohexanone） ： n （1,3-propanediol） = 1： 1.2, the quantities of catalyst was 1.0 g,toluene as water-carrying agent, reaction time was 1. 5 h, the yield of product reached over 99.1%, the purity was 99.6%.
出处
《应用化工》
CAS
CSCD
2006年第4期278-280,297,共4页
Applied Chemical Industry
关键词
固体超强酸
环己酮1
3-丙二醇缩酮
催化
缩合反应
solid superacid
cyclohexanone 1,3-propanediol ketal
catalysis
condensation reaction
