稀土固體超強酸SO4(上標 2-)-TiO2-La(上標 3+)催化合成癸二酸二乙酯

The synthesis of diethyl sebacate from absolute ethanol and sebacic acid with rare-earth solid superacid SO4(superscript 2-)-TiO2-La(superscript 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:l; the reaction time was 3.0 h, the taking water reagent (benzene) was 15 mL. The yield of diethyl sebacate was about 96.8%.