固体超强酸催化合成乙酸正丁酯  

Synthesis of n-butyl acetate catalyzed by solid super acids

作　　者：晋春[1] 郭永[1] 薛万华[1] 孟双明[1] 

机构地区：[1]山西大同大学化学与化工学院,山西大同037009

出　　处：《工业催化》2009年第12期50-54,共5页Industrial Catalysis

基　　金：国家自然科学基金项目(50472083);山西大同大学科学基金项目(2007k08)

摘　　要：分别用固体超强酸S_2O^(2-)_8/ZrO_2和SO^(2-)_4/ZrO_2作催化剂,以冰乙酸和正丁醇为原料合成了乙酸正丁酯,考察醇与酸物质的量比、反应时间、反应温度、催化剂用量和催化剂焙烧温度等因素对酯化率的影响。得出反应的最佳条件为:n(正丁醇):n(冰乙酸)=1.3:1.0,催化剂用量为冰乙酸质量的3%,反应温度115℃左右,反应时间30 min,固体超强酸S_2O^(2-)_8/ZrO_2和SO^(2-)_4/ZrO_2作催化剂时,乙酸正丁酯的收率分别为96.5%和90.5%。N-butyl acetate was synthesized from glacial acetic acid and n-butyl alcohol using solid super acid S2O^82-/ZrO2 and SO4^2-/ZrO2, respectively, as the catalysts. Influence of glacial acetic acid to n-butyl alcohol mole ratio, reaction time, reaction temperature, catalyst dosage ture was investigated. The optimum reaction condition was obtained as and catalyst calcination tempera- follows： glacial acetic acid to nbutyl alcohol molar ratio 1.0： 1.3, catalyst dosage 3% of the mass of glacial acetic acid, reaction temperature 115 ℃, reflux for 30 min. Esterification rate of 96.5% and 90.5% was obtained over S2O8^2-/ZrO2 and SO4^2-/ZrO2, respectively.

关 键 词：催化化学 固体超强酸催化剂 乙酸正丁酯 酯化反应 

分 类 号：O643.36[理学—物理化学]