磁性纳米固体超强酸催化合成没食子酸正丁酯

Synthesis of Gallicacid n-Butyl Ester Catalyzed By Magnetic Nanograde Solid Super Acid

以磁性纳米固体超强酸SO42-/TiO2为催化剂,以没食子酸酯和正丁醇为原料,直接酯化合成没食子酸正丁酯,同时对醇酸物质的量比、催化剂用量、反应温度和反应时间进行了正交试验,得出最佳工艺条件为:醇酸物质的量比为15∶1、催化剂用量为1.8 g、反应温度为110℃、反应时间为3 h,酯化率可达83.1%。

The n - Butyl gallic acid ester was synthesized by gallic acid and n - butyl alcohol with magnetic nanograde solid super acid SO42-/TiO2, and the orthogonal experiments of molar ratio alcohol to gallic acid, quantities of catalyst , reaction time and reaction temperature were carried out.The optimum conditions were as follows ：the molar ratio of alcohol to gallic acidwas 15：1, the quantities of catalyst was 1.8 g, the reaction time was 3 h, the reaction temperature was 110℃, the yield of the ester could reach 83.1%.