摘要
将回收全氟磺酸离子交换膜制成全氟磺酸树脂溶液,用溶胶-凝胶法得到全氟磺酸树脂/二氧化硅复合催化剂,并用FTIR、DSC-TGA、BET对其进行表征。将该催化剂用于合成苯甲醛乙二醇缩醛,考察了物料量比、反应时间、催化剂用量对苯甲醛与乙二醇反应的影响规律,最佳反应条件为n(苯甲醛)∶n(乙二醇)=1∶1.8、催化剂用量为反应物总质量的6%、环己烷为带水剂、反应时间1.0 h时,苯甲醛乙二醇缩醛的收率达82.41%。
The used perfluorosulfonic acid ion-exchange membrane was turned into a solution of perfluorosulfonic acid resin, and then, by sol-gel method, the perfluorosulfonic acid resin/silica composite catalyst was prepared and characterized by FTIR, DSC - TGA and BET measurements. The composite catalyst was applied to the acetalation of benzaldehyde with ethylene glycol. Thus, with n (benzaldehyde) :n ( ethylene glycol) = 1:1.8, w (catalyst) = 6% of feed stock, cyclohexane as water entrainer and reacting for 1 h,benzaldehyde ethylene glycol acetal can be obtained in 82. 41%yield.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2006年第6期549-552,共4页
Fine Chemicals
基金
江苏省教育厅基金项目(KJS02113)
关键词
全氟磺酸离子交换膜
全氟磺酸树脂/二氧化硅复合催化剂
苯甲醛乙二醇缩醛
perfluorosulfonic acid ion-exchange membrane
perfluorosulfonic acid resin/silica composite catalyst
benzaldehyde ethylene glycol acetal