硫酸氢钠-硫酸催化合成硬脂酸正丁酯

Synthesis of n- butyl stearae catalyzed by sodium bisulfate-composite sulfate acid

NaHSO4和浓H2SO4作为酯化反应的催化剂,该文研究了以硬脂酸和正丁醇为原料,NaHSO4-浓H2SO4为复合催化剂合成硬脂酸正丁酯。最佳反应条件为:酸醇摩尔比n(硬脂酸)∶n(正丁醇)为1∶4.5,催化剂用量为1.3g,复合催化剂中Na HSO4与浓H2SO4的比为1∶0.16,反应时间105min,酯化率高达97.56%。

The sodium bisulfate and concentrated sulfuric acid can be used as a catalyst for esterification. Us-ing acetic acid and n-butyl as raw material, sodium bisulfate and sulfuric acid catalyst for the synthesis of n-butyl stearate compound were studied. The optimum reaction conditions are as follows： acid molar ratio n （acetie acid）： n （n-butyl）was 1：4.5, the amount of catalyst 1.3g, Complex catalyst in concentrated sulfuric acid and sodium hydrogen sulfate ratio of 1：0.16, and the reaction time was one hundred and twenty minutes（105min）. Esterification rate can be up to97.56%.