丁酸戊酯在用H_2SO_4改性的H-β沸石上的催化合成  

Catalytic Synthesis of Amyl Butyrate over H-β Zeolite Modified with H_2SO_4

作　　者：赵振华[1] 

机构地区：[1]长沙大学应用化学与环境科学系,湖南长沙410003

出　　处：《合成化学》2002年第6期539-541,共3页Chinese Journal of Synthetic Chemistry

摘　　要：以H2 SO4 改性的H β沸石作催化剂合成了丁酸戊酯 ,考察了合成条件对正丁酸与正戊醇酯化反应的影响。适宜的反应条件为 :催化剂用量 8.8g/mol正丁酸 ,mol正丁酸∶mol正戊醇 =1∶1 .2 ,带水剂环己烷用量 1 8mL/mol正丁酸 ,反应温度 1 5 7℃～ 1 65℃ ,反应时间 3h。在此反应条件下正丁酸的转化率在 83 %以上。该催化剂能够重复使用 。Amyl butyrate was synthesized using H-β zeolite modified with H 2SO 4 as a catalyst. The effects of some synthetic conditions on the esterification reaction of n-butyric acid with n-pentanol were investigated. The appropriate reaction conditions are as follows: the amount of catalyst=8.8g/mol n-butyric acid, mol n-butyric acid∶mol n-amyl alcohol=1∶1.2, the amount of cyclohexane=18mL/mol n-butyric acid, reaction temperature=157℃～165℃ and reaction time=3h. The conversion of n-butyric acid obtained under such reaction conditions was over 83%. The catalyst can be reused to give almost the same conversion of n-butyric acid as that given by the fresh catalyst.

关 键 词：丁酸戊酯 正丁酸 正戊醇 酯化反应 H-β沸石 催化剂 

分 类 号：O643.32[理学—物理化学]