以羟基乙酸和正丁醇为原料,用新型固体超强酸SO2-4/ZrO2/La3+为催化剂,合成羟基乙酸正丁酯。其工艺简单,产物转化率高。最佳工艺条件为:n(羟基乙酸)∶n(正丁醇)=1∶3.5,回流反应4h,催化剂用量为醇酸总质量的2.35%,收率83.2%。 Hydroxyacetic acid and n-butanol were used as raw materials to synthesize n-butyl glycolate with a new solid superacid SO2-4 / ZrO2 / La3 + as catalyst. The process is simple, high product conversion rate. The optimum conditions were as follows: n (glycolic acid): n (n - butanol) = 1: 3.5 and refluxed for 4h. The amount of catalyst was 2.35% and the yield was 83.2%.