聚丙烯酰胺-co-2-丙烯酰胺基-2-甲基丙磺酸凝胶催化合成乙酸正丁酯  

Application of Poly(acrylamide-co-2-acrylamido-2-methylpropane sulfonicacid) Hydrogel in Synthesis of N-butyacetate

作　　者：孟艳华[1] 潘春跃[1] 谭海军[1] 

机构地区：[1]中南大学化学化工学院功能有机高分子研究所,湖南长沙410083

出　　处：《广东化工》2009年第10期57-58,69,共3页Guangdong Chemical Industry

摘　　要：采用聚丙烯酰胺-co-2-丙烯酰胺基-2-甲基丙磺酸(AAm-co-AMPS)凝胶代替传统酸性催化剂催化酯化反应,期望能够在反应过程中分离副产物—水,提高酯化率。考察凝胶在纯水中的溶胀性能,并以乙酸正丁酯合成为模板来考察凝胶的催化性能和在反应过程中分离水的作用。研究表明:凝胶相对于氨基磺酸具有较好的催化活性;反应的酯化率主要与凝胶的加入量有关,在100℃,催化剂加入量为1.8g,反应3.6h,酯化率达到78.2%。该凝胶催化剂通过简单的处理重复利用4次,催化活性几乎不变。Polyacrylamide-co-2-acrylamido-2-methylpropanesulfonicacid（AAm-co-AMPS）hydrogel was synthesized and its catalytic activity was tested for esterification of acetic acid with n-butanol as an alternative to aminosulfonic acid. The results showed that the catalysis of the P（AAm-co-AMPS）hydrogel was more effective than aminosulfonic acid; The yield of n-butyl acetate increased with dosage of the hydrogel in the initial stage, n-butyl acetate yield of 74 % was obtained under n（acetic acid） ：n（n-butanol）=0.1, reaction time of 3.6 h, the hydrogel dosage of 1.8 g, reaction temperature of 100 ℃. The catalysis was used repeatedly 5 times after simple treatment and its catalytic activity didn＇t change.

关 键 词：聚(AAm—co—AMPS)凝胶 催化 乙酸正丁酯 

分 类 号：TQ[化学工程]