壳聚糖硫酸盐催化合成乙酸仲丁酯  

Synthesis of sec-butyl acetate catalyzed by chitosan sulfate

作　　者：刘春生[1] 于杨[1] 刘迪[1] 罗根祥[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《化学试剂》2007年第4期243-244,246,共3页Chemical Reagents

摘　　要：以壳聚糖硫酸盐为非均相催化剂,对仲丁醇与乙酸酐之间的酰化反应进行了研究,考察了催化剂质量、醇酐物质的量比、反应时间对乙酸仲丁酯收率的影响。壳聚糖硫酸盐有着较好的催化活性,当乙酸酐用量为0.1 mol,醇酐物质的量比为1.1,催化剂质量为0.25 g时反应30 min,乙酸仲丁酯收率可达95.6%,且催化剂重复使用5次仍保持较高活性,所得产品无色透明,纯度很高。产品用折光率和红外光谱进行了确证。The acylation of sec-butanol with acetic anhydride was studied by using chitosan sulfate as the heterogeneous catalyst. The effect of different factors such as the amount of catalyst, the ratio of sec-butanol to acetic anhydride and reaction time on the yield of sec-butyl acetate were carefully studied. The results showed that chitosan sulfate exhibited a good catalytic activity. The best reaction conditions were as follows：when the amount of acetic anhydride was 0. 1 mol, the ratio of sec-hutanol to aceticanhydride was 1.1, the amount of chitosan sulfate used as the catalyst was 0.25 g. After reacting for 30 rain, the yield of secbutyl acetate reached 95.6%. The catalyst could be repeatedly used. The product was colorless and transparent. The product was verified by refractive index testing and IR spectrometry.

关 键 词：乙酸仲丁酯 壳聚糖硫酸盐 催化合成 酰化反应 

分 类 号：O643.36[理学—物理化学]