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探讨了漆酚金属盐高分子复合试剂催化酯化反应的情况。首先以乙酸和丁醇为反应体系,筛选了最佳催化剂,实验表明,Fe、Al、Ti、Sn等的金属盐与漆酚树脂的复合试剂均能催化酯化反应,其中,漆酚Fe3+和Al3+盐的复合试剂(简称为URFeAl)催化酯化活性最好,重复使用8次后转化率仍为92%。此外,该催化剂还能催化乙酸乙酯、乙酸丙酯、乙酸戊酯等一系列有机酯的合成,转化率为87%~97%,且能重复使用。
The urushiol metal salt polymer complex catalyst catalytic esterification reaction situation. First of all acetic acid and butanol as the reaction system, screening the best catalyst, experiments show that, Fe, Al, Ti, Sn and other metal salts and urushiol resin composite catalyst can catalyze the esterification reaction, among them, urushiol and Al3 + salt of the composite reagent (referred to as UR Fe Al) catalytic esterification activity best, repeated use of 8 times after the conversion was still 92%. In addition, the catalyst can also catalyze the synthesis of a series of organic esters such as ethyl acetate, propyl acetate and amyl acetate. The conversion rate is 87% -97%, and can be reused.