槽外法苯甲酸催化甲苯电合成苯甲醛  

"Out-Cell" indirect electrosynthesis of benzaldhyde from toluene catalyzed by benzoic acid

作　　者：李国防[1] 

机构地区：[1]商丘师范学院化学系商丘师范学院有机新材料合成重点实验室,河南商丘476000

出　　处：《应用化工》2010年第7期988-989,996,共3页Applied Chemical Industry

基　　金：河南省科技攻关资助项目(92102210121)

摘　　要：以苯甲酸作相转移催化剂,Mn3+/Mn2+为媒介,甲苯为原料,采用槽外法电合成苯甲醛。利用正交实验研究了H2SO4浓度、反应温度和苯甲酸用量对苯甲醛生成速率和产率的影响。结果表明,当每升甲苯含8 g苯甲酸、水相H2SO4浓度为51.6%和反应温度85℃时,苯甲醛的收率大于93%。Benzoic acid as phase transfer catalyst and Mn^3＋/Mn^2＋ as intermedium,benzaldhyde was indirectly electrosynthesized from toluene by ＂out-cell＂.The influence of H2SO4 concentration,temperature and the dose of benzoic acid on the reaction rate and the yield of benzaldehyde was investigated by orthogonal experiment.And the results showed that the yield of benzaldehyde was more than 93% at 85 ℃ when 8 g benzoic acid was dissolved in 1 L toluene and 51.6% H2SO4 in the Mn（Ⅲ） solution.

关 键 词：甲苯 苯甲醛 苯甲酸 间接电合成 

分 类 号：O625.41[理学—有机化学]