摘要
利用共沉淀法由Fe(NO3)3、Al(NO3)3、Zn(Ac)2和H2SO4制备了SO42-/Fe2O3/Al2O3/ZnO催化剂,并用于催化合成苯甲醛丙二醇缩醛,研究了醛醇摩尔比、催化剂用量、反应时间等因素对产品收率的影响。结果表明,在n(苯甲醛)∶n(丙二醇)=1∶1.2,催化剂用量为反应物总质量的1%,反应时间50 min的最佳条件下,苯甲醛丙二醇缩醛的收率可达97.6%。
The SO4^(2-)/Fe2O3/Al2O3/ZnO solid acid catalyst was prepared from Fe(NO3)3·9H2O and Al(NO3)3·9H2O and Zn(Ac) 2 by a co-precipitation method. And used as catalysts for the synthesis of benzaldehyde 1,2-propanediol acetal. Influence of aldol molar ratio, catalyst amount, reaction time on product yield. The results showed that n(benzaldehyde) : n(propanediol) is 1: 1.2, the amount of catalyst 1% of the total mass of reactants, under the optimum conditions of the reaction time of 50 min, the yield of benzaldehyde 1,2-propanediol acetal was uo to 97.6%
出处
《应用化工》
CAS
CSCD
2012年第8期1386-1388,1398,共4页
Applied Chemical Industry
基金
山西大同大学校级科研项目(2009K3
2010Q11)
关键词
苯甲醛丙二醇缩醛
固体超强酸
催化
缩醛反应
benzaldehyde 1,2-propanediol acetal
solid superacid
catalysis
acetalation