复合无机盐催化合成己二酸二正辛酯

Synthesis of Dioctyl Adipate Catalyzed by Compound Inorganic Salts

经复合得到Fe2（SO4）3-K2SO4催化剂，并由己二酸和正辛醇为原料合成己二酸二正辛酯，研究了酯化反应的影响因素．结果表明，该催化剂对酯化反应具有良好的催化活性．合成己二酸二正辛酯的最佳条件是：己二酸的物质的量为0．05mol，醇酸物质的量比为2．2：1，催化剂用量为1．1g，反应温度为85～100℃，带水剂环己烷为10mL，回流分水约1．5h，此时酯化率可达92．2％．

Dibutyl adipate was synthesized from adipic acid and n-capryl alcohol with ferric and potassium sulfate as catalyst . The factors influencing the esterification were studied. The result indicated that the catalyst had an excellent catalytic activity to the esterification reaction . The optimized conditions are： n（adipic acid） = 0.05mol, n（ n-capryl alcohol） ：n（ adipic acid） = 2.2：1 （the molar ration）, the amount of catalyst = 1.1 g, the catalyst for the reaction temperature 85-100 ℃,10 mL of hexane and the reaction time 1.5 hour. The efficiency of this esterification reaction is 92.2%.