强酸性阳离子交换树脂催化合成甲酸己酯

Study of synthesis of hexyl-formate catalyzed by strong acidic cation exchange resin

以甲酸、正己醇为原料,直接酯化合成甲酸己酯,分别研究了反应温度、反应时间、原料配比、带水剂和催化剂用量等条件对合成反应的影响,确定了最佳工艺条件。该方法合成甲酸己酯的最佳工艺条件是:120℃;反应40min;正己醇与甲酸的摩尔比为1 15;催化剂用量为甲酸质量的1 2%;带水剂环己烷用量为甲酸与正己醇总质量的20%。甲酸己酯的收率达到96 12%。催化剂不经处理可循环使用多次。该催化剂具有价廉易得、催化活性好、不腐蚀设备和无环境污染等优点。

Synthesis of hexyl-formate from direct esterification of n-hexanol and formic acid using a strong acidic cation exchange resin as catalyst was studied with respect to the factors that influencing the yield,such as reaction temperature,(reaction) time,raw material ratio,kind and dosage of water stripper and catalyst dosage.Optimal conditions were found as,reaction temperature 120 ℃;reaction time 40 min;mole ratio of n-hexanol to formic acid 1.15∶1;catalyst dosage 1.2 % (mass ratio to formic acid);water stripper cycol-hexane 20 % (mass ration to the sum of n-hexanol and formic acid).Overall yield achieves 96.12 %.The catalyst can be reused for many times without treatment.