It has been found that tungstophosphoric acid was superior to H 2SO 4 when used as catalyst for esterification of ethyl alcohol with adipic acid.The optimum reaction conditions for synthesis of diethyl adipate catalyz...It has been found that tungstophosphoric acid was superior to H 2SO 4 when used as catalyst for esterification of ethyl alcohol with adipic acid.The optimum reaction conditions for synthesis of diethyl adipate catalyzed with tungstophosphoric acid were determined,the yield being 95.8%.展开更多
The synthesis of isoamyl butyrate with isoamyl alcohol and butyric acid as reactants and rare-earth solid superacid SO42-/TiO2/La3+ as catalyst had been studied. The influent actors of reaction were investigated. The ...The synthesis of isoamyl butyrate with isoamyl alcohol and butyric acid as reactants and rare-earth solid superacid SO42-/TiO2/La3+ as catalyst had been studied. The influent actors of reaction were investigated. The results showed that the appropriate conditions should be: Weight of catalyst was 0. 5g (weight of butyric acid if 0. 2mol); molar ratio of isoamyl alcohol to butyric acid was 1. 8: 1; reaction time was 2. 0 h; the taking water reagent (Toluene) was 15mL. The yield of isoamyl butyrate was about 99. 0%.展开更多
文摘It has been found that tungstophosphoric acid was superior to H 2SO 4 when used as catalyst for esterification of ethyl alcohol with adipic acid.The optimum reaction conditions for synthesis of diethyl adipate catalyzed with tungstophosphoric acid were determined,the yield being 95.8%.
文摘The synthesis of isoamyl butyrate with isoamyl alcohol and butyric acid as reactants and rare-earth solid superacid SO42-/TiO2/La3+ as catalyst had been studied. The influent actors of reaction were investigated. The results showed that the appropriate conditions should be: Weight of catalyst was 0. 5g (weight of butyric acid if 0. 2mol); molar ratio of isoamyl alcohol to butyric acid was 1. 8: 1; reaction time was 2. 0 h; the taking water reagent (Toluene) was 15mL. The yield of isoamyl butyrate was about 99. 0%.
