磺化硅胶催化合成乙酸正丁酯的研究  

Preparation of N-butyl Acetate with Silica Sulfuric Acid as Xatalyst

作　　者：李冰[1] 沈丹[1] 李婷[1] 韩晶[1] 孙琳[1] 王俊梅[1] 刘万毅[1] 

机构地区：[1]宁夏大学化学化工学院,宁夏银川750021

出　　处：《广州化工》2013年第22期81-83,共3页GuangZhou Chemical Industry

基　　金：宁夏大学自然科学基金重点项目(No:ZR1104)

摘　　要：磺化硅胶是一种以化学键键合而成,性能稳定的固体酸催化剂。本文以冰醋酸和正丁醇为原料,磺化硅胶为催化剂,合成了乙酸正丁酯,并获得了最佳合成条件:催化剂用量为反应物总质量的1.0%,n(乙酸)∶n(正丁醇)=1∶1.5,回流时间为45 min,乙酸正丁酯的酯化率可达98.5%,催化剂重复使用10次后的酯化率仍达81.3%。磺化硅胶对乙酸正丁酯的合成具有良好的催化活性。Silica sulfuric acid （SSA） was a kind of solid acid catalyst with chemical bonding and stable performance. The n - butyl acetate was synthesized from n - butanol and glacial acetic acid with SSA as catalyst. The optimal reaction conditions were as follows ： when the quality of the catalyst to total material was 1.0%, the molar ratio of glacial acetic acid to n - butanol was 1 ： 1.5 and reaction time was 45 min, the esterification rate was up to 98.5%. What＇s more, when the catalyst was reused after 10 times, the esterification rate was still up to 81.3%. SSA showed good catalytic activity for the synthesis of n - butyl acetate.

关 键 词：固体酸催化剂 磺化硅胶 催化 乙酸正丁酯 

分 类 号：O63[理学—高分子化学]