摘要
研究了Ce(SO4)2催化乙二醇与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正己醛、正辛醛、苯甲醛等10余种醛(酮)的缩合反应。考察了反应时间、醛(酮)与醇的配比、KHSO4用量等因素对醛(酮)与醇缩合反应的影响。结果表明:当醛(酮)与乙二醇物质的量比为1∶1.2,催化剂用量为1 mol醛(酮)1.0 g,反应2.0 h,选择性一般在98%以上,转化率在92%以上。Ce(SO4)2对醛(酮)与醇的缩合反应有较好的催化性能。
The acetalization and ketalization of different aldehydes and ketones with glycol catalyzed by Ce （SO4）2 are studied. The effects of reaction time, mole ratio of reactants and dosage of catalyst on the yield of acetals （ketals） are investigated. The results show that Ce（ SO4 ）2 displays efficient catalytic performance for synthesis of acetals （ketals）, the selectivity is more than 98% and the con- version is more than 92% when the mole ratio of aldehydes （ketones） to glycol is 1 ： 1.2, the dosage of catalyst is 1.0 g per mole aldehydes （ketones） and the reaction time is 2.0 h.
出处
《化学工业与工程技术》
CAS
2013年第3期55-57,共3页
Journal of Chemical Industry & Engineering
