以柠檬酸和正丁醇为原料,SnC l4改性阳离子交换树脂为催化剂,合成了柠檬酸三丁酯。FTIR和X射线荧光光谱表征结果表明,用SnC l4对阳离子交换树脂进行改性后,树脂骨架结构变化不大,Sn4+的负载量达13.47%(质量分数,下同)。合成柠檬酸三丁酯的最佳工艺条件为:反应温度155℃,反应时间6 h,n(正丁醇)∶n(柠檬酸)=4.1∶1,催化剂用量为反应物总质量的4.5%,柠檬酸三丁酯的产率可达97.3%。催化剂不经任何处理重复使用8次后,产率仍为96%。 Using citric acid and n-butanol as raw materials, SnCl 4 modified cation exchange resin as catalyst, the synthesis of tributyl citrate. The results of FTIR and XRD showed that the resin framework structure changed little with SnC14, and the loading of Sn4 + was 13.47% (mass fraction). The optimum conditions for the synthesis of tributyl citrate were: reaction temperature 155 ℃, reaction time 6 h, n (n-butanol): n (citric acid) = 4.1:1, catalyst dosage 4.5% , Yield of tributyl citrate up to 97.3%. After repeated use of catalyst for 8 times without any treatment, the yield was still 96%.