摘要
研究了HZSM-5分子筛催化1，4-丁二醇与环己酮、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、HZSM-5分子筛用量等因素对醛（酮）与醇缩合反应的影响。结果表明，当醛（酮）与1,4-丁二醇摩尔比为1：1．5，催化剂用量为2．5g／mol醛（酮），反应2h，选择性在97％~E，转化率在90％以上，表明HZSM－5分子筛对醛（酮）与醇的缩合反应有较好的催化性能。
Acetalization and ketalization of various aldehydes and ketones with 1,4-butadiol with HZSM-5 catalyst were studied. Effect of reaction time ,mole ratio of reactants and amount of catalyst on yield of acetal （acetal） were investigated. The results show that HZSM-5 is an efficient catalyst for acetalization and ketalization with high conversion and selectivity in mild conditions. The best reaction conditions are as follows： molar ratio of aldehyde or ketone to 1,4-butadiol is 1 ： 1.5,catalyst amount is 2.5 g/tool, reaction time is 2 h.Under above conditions,conversion is over 90% and selectivity is over 97%.
出处
《辽宁化工》
CAS
2010年第12期1222-1224,1228,共4页
Liaoning Chemical Industry
