活性炭固载酸性催化剂合成巯基乙酸异辛酯  

Synthesis of isooctyl mercaptoacetate using acid catalyst supported on granular activated carbon

作　　者：庄志杨[1] 李继忠[2] 

机构地区：[1]延安职业技术学院师范分院,陕西延安716000 [2]延安大学化学与化工学院,陕西延安716000

出　　处：《工业催化》2007年第6期38-40,共3页Industrial Catalysis

基　　金：陕西省重点实验室科研项目(02JS23)

摘　　要：以巯基乙酸和异辛醇为原料,采用颗粒状活性炭固载对甲苯磺酸作催化剂合成巯基乙酸异辛酯,考察了影响反应的因素。实验结果表明,酯化反应的最佳条件:n(巯基乙酸)∶n(异辛醇)=1∶1.4、催化剂用量为反应物总质量的2.5%、反应时间105 min、带水剂甲苯10 mL,产率可达95.59%。Isooctyl mercaptoacetate was synthesized from mercaptoacetic acid and 2-ethyl hexanol using p-toluene sulphonic acid supported on granule activated carbon as the catalyst. The influencing factors were investigated. Experimental results indicated that the optimum condition for the esterification reaction was as follows：n（ mercaptoacetic acid） ： n （2-ethyl hexanol） = 1： 1.4, reaction time 105min, catalyst dosage = 2.5% of the reactants, water carrying reagent 10 mL. Isooctyl mercaptoacetate yield of 95.59% was obtained under the optimal condition.

关 键 词：巯基乙酸异辛酯 活性炭 对甲苯磺酸 酯化 

分 类 号：O643.36[理学—物理化学] O623.624[理学—化学]