磷钨杂多酸钠催化制备醋酸正丁酯

Catalytic Preparation of n-Butyl Acetic with Sodium Heteropoly-Tungstic Acid

用磷钨杂多酸钠取代传统的浓硫酸作催化剂来制备醋酸正丁酯的研究,考察了各种因素对反应收率的影响。结果表明,反应温度为100℃,反应物醇、酸、摩尔比为1:1.5,催化剂用量约为6‰时,酯化反应收率达85％以上。

The way of catalytic preparation of n-butyl Acetic with sodium heteropoly-tungstic acid instead of dense sulfuric acid, which is the traditional mateial has been studied meanwhile, the effect of factors on esterifi-cation yield have been investigated.The results indicated that it woule get a esterificatiom yield at more than 85% when its condition were that the mixture, which its mol ratic of n-butyl alcohol and acetic acid is 1:1.5, was heated 85 minutes at 100℃, and the consume of catalysts was 6‰