稀土固体超强酸SO_4^(2-)-TiO_2-La^(3+)催化合成癸二酸二乙酯

The Synthesis of Diethyl Sebacate Catalyzed by SO_4^(2-)-TiO_2-La^(3+)Rare earth Solid Superacid

研究以稀土固体超强酸 SO2 -4-Ti O2 -L a3+为催化剂 ,癸二酸和无水乙醇为原料 ,合成癸二酸二乙酯 ,并考察影响反应的因素 .结果表明 ,最适宜的反应条件为醇酸摩尔比 4.0∶ 1,催化剂用量 1.0 g (癸二酸 0 .1mol) ,带水剂苯 15 m L,反应时间 3.0 h.酯化率达 96 .8% .

The synthesis of diethyl sebacate from absolute ethanol and sebacic acid with rare earth solid superacid SO 2- 4 TiO 2 La 3+ as catalyst has been studied. The influence factors of the reaction were investigated. The results showed that the optimum conditions are as follows. The weight of the catalyst was 1 0 g (if the weight of sebacic acid was 0 1 mol); molar ratio of absolute ethanol to sebacic acid was 4 0∶1; the reaction time was 3 0 h; the taking water reagent (benzene) was 15 mL. The yield of diethyl sebacate was about 96 8%.