The infrared spectrum of pyridine adsorbed on surface of ZnSO 4·7H 2O indicates it exhibits Lewis acid centers as a catalyst. Experiments showed that it had good catalytic performance in esterification of oxalic ...The infrared spectrum of pyridine adsorbed on surface of ZnSO 4·7H 2O indicates it exhibits Lewis acid centers as a catalyst. Experiments showed that it had good catalytic performance in esterification of oxalic acid with iso-amyl alcohol with ester yield being 97.5% in following conditions: the molar ratio of isoamyl alcohol to oxalic acid 2.8, catalyst amount 7.4%(based on the mass of oxalic acid), reaction temperature 145 ℃, reaction time 1.5 h. The catalyst could be used repeatedly for six times.展开更多
文摘The infrared spectrum of pyridine adsorbed on surface of ZnSO 4·7H 2O indicates it exhibits Lewis acid centers as a catalyst. Experiments showed that it had good catalytic performance in esterification of oxalic acid with iso-amyl alcohol with ester yield being 97.5% in following conditions: the molar ratio of isoamyl alcohol to oxalic acid 2.8, catalyst amount 7.4%(based on the mass of oxalic acid), reaction temperature 145 ℃, reaction time 1.5 h. The catalyst could be used repeatedly for six times.
