对叔丁基苯甲酸甲酯加氢合成对叔丁基苯甲醛  

Direct Hydrogenation of Methyl p-tert-Butylbenzoate to p-tert-Butylbenzaldehyde

作　　者：李玉红[1] 阎圣刚[1] 范丹丹[1] 邵燕[1] 徐长安[1] 

机构地区：[1]大连理工大学化工学院,大连116024

出　　处：《香料香精化妆品》2005年第1期4-6,共3页Flavour Fragrance Cosmetics

摘　　要：以对叔丁基苯甲酸甲酯为原料．二氧化锰负载氧化物为催化剂，在常压固定床反应器上考察了加氢还原催化剂对制备对叔丁基苯甲醛的影响因素．并获得了最佳反应条件为：反应温度为380～400℃．酯的液时空速为5mL/h．氢气的气时空速约为1050h^-1及合适的催化剂：15%～20%MnO2/γ-Al2O3．A process for synthesis of p-tert-butylbenzaldehyde by direct hydrogenation of methyl p-tert-butylbenzoate was studied. MnO 2 supported on different oxides as catalysts was examined. The effects of catalysts and reaction conditions on the hydrogenation process were investigated. The appropriate catalyst and the optimal reactive conditions were obtained as follow: 15~20% MnO 2/γ-Al 2O 3, the reaction temperature 380~400℃, LHSV of ester 5mL/h and GHSV of H 2 about 1050 h -1.

关 键 词：苯甲酸甲酯 对叔丁基苯甲醛 加氢合成 常压固定床 催化剂 加氢还原 反应温度 最佳反应条件 Γ-AL2O3 二氧化锰 

分 类 号：TQ243[化学工程—有机化工]