摘要
以铌酸为催化剂合成了马来酸二正丁酯,在醇/酐摩尔比3:1,催化剂用量3％,回流反应2.5 h条件下,酯收率达97.3％。催化剂不经处理可循环使用多次,且不污染环境,与一些常见的催化剂相比,其优点明显。
Dibutyl maleate was synthesized by using niobic acid as catalyst under the optimum conditions as follows : the molar ratio of n - butanol to maleic anhydride 3.0 :1, the reaction time of reflux 2.5 h, the amount of catalyst 3% (mass ratio) of maleic anhydride. The yield of dibutyl maleate was up to 97 .3% . The catalyst could be used for times without any treatments, and had no pollution to environment. In comparison with some other common catalysts, the niobic acid had obvious advantages.
出处
《精细石油化工进展》
CAS
2002年第3期4-6,共3页
Advances in Fine Petrochemicals
