酸化交联蒙脱土催化合成乙酸苄酯  

Catalytic Synthesis of Benzyl Acetate over Acid-Treated Crosslinked Montmorillonite

作　　者：李华[1] 武丽艳[1] 贾丽华[1] 

机构地区：[1]齐齐哈尔大学化学与化工学院,齐齐哈尔161006

出　　处：《应用化学》2006年第5期557-560,共4页Chinese Journal of Applied Chemistry

摘　　要：对酸化交联蒙脱土进行了X射线衍射、电镜和比表面积分析,当质量分数为15%的硫酸酸化交联蒙脱土时,d001=1.25 nm,比表面积为229 m2/g。用合成的酸化交联蒙脱土作催化剂,苄醇和冰醋酸为原料直接酯化合成了乙酸苄酯。结果表明,质量分数为15%的硫酸酸化交联蒙脱土催化活性最好,反应条件为n(醇)∶n(酸)=1∶1.2,ω(催化剂)=0.4%,反应时间为1.5 h,醇酯化率达到99%以上。Crosslinked montmorillonite and the acid-treated crosslinked montmofillonite were studied by means of XRD, BET and SEM. For the 15% （mass fraction） acid-treated crosslinked montmorillonite, its surface area was 229 m^2/g, d001 = 1.25 nm. Benzyl acetate was prepared directly from benzyl alcohol and acetic acid with acid-treated montmorillonite as the catalyst and toluene as the water stripping agent. The results show that the 15% （mass fraction） acid-treated crosslinked montmorillonite is an excellent catalyst. The optimum reaction conditions were that n（alcohol） ： n（acid） was 1 ： 1.2, to（cat） = 0. 4%, and the reaction time was 1.5 h. The esterification rate was about 99%.

关 键 词：酸化交联蒙脱土 催化 乙酸苄酯 

分 类 号：O643.3[理学—物理化学]