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

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.