四氯化锡催化合成丙酸异戊酯的研究

Study on the Synthesis of Isoamyl Propionate by Sncl_4.5H_2O

以四氯化锡为催化剂,正丙酸和异戊醇为原料合成了丙酸异戊酯. 最佳合成条件:以0.2mol正丙酸为基准,醇酸摩尔比1.3:1,催化剂用量2.0g,反应时间为1.0h,最后酯化率为92.3%. 研究表明该催化剂具有催化活性高、稳定性好、价廉易得、后处理工艺简单、不需要加带水剂、无腐蚀性、不污染环境以及能重复使用等优点.

In the presence of Sncl4.5H2O catalyst,propionice acid and isopentanol reacted to form Isoamyl propionate. The optimum conditions were as follows: 0.2mol n-propionic acid; molar ratio of isopentanol to n-propionice acid:1:3:1; mass of catalyst:2.0g; reaction time:60min. Under these conditions the yield of isoamyl propionate was 92.3%. Experimental results showed that the catalyst had many advantages, such as high activity, good stability, easy preparation, low cost, easy post-treatment process and no need of using taking-water agent. It was also non-corrosive and non-pollutant to the environment, and it could be used repeatedly.