【摘要】 以马来酸酐为原料 ,钨酸钠为催化剂 ,双氧水为氧化剂合成了环氧琥珀酸 ,并进行了红外、13 C核磁表征。通过正交实验对实验中影响环氧琥珀酸产率的主要因素 :反应时间、反应温度、催化剂用量及氢氧化钠用量进行了考察 ,得到了合成环氧琥珀酸的最佳工艺条件 :反应时间 1 .5h,反应温度 70℃ ,催化剂用量为马来酸酐用量的 1 % ( x ) ,氢氧化钠与马来酸酐的摩尔比为 2∶ 1。更多还原

【Abstract】 Epoxidation of maleic acid by hydrogen peroxide in the presence of sodium tungstate has been studied, and the epoxysuccinic acid was characterized by IR and 13 C NMR. The effects of quantity of catalyst and sodium hydroxide, reaction temperature, reaction time on conversion of maleic acid to epoxysuccinic acid were investigated. The optimum reaction conditions were obtained as follows: the molar ratio of catalyst to maleic anhydride 1%, reaction temperature 60 ℃, reaction time 1 h.更多还原