阴极间接电氧化合成顺环氧丁二酸

Synthesis of cis 2,3 Epoxysuccinic Acid by Cathodic Indirect Electro oxidation

采用钨酸盐 /过钨酸盐媒质由顺丁烯二酸酐在阴极间接电氧化合成了顺环氧丁二酸 ,获取了最佳工艺条件 :反应温度 70℃、钨酸钠浓度 2 0mmol/L、反应时间 90min、pH5、物料的物质的量比 1.0∶0 9,经液相色谱检测 ,环氧化率达 90 %。

cis-2,3-Epoxysuccinic acid was synthesized by indirect electrooxidation of maleic anhydride with tungstate/pertungstate as a medium.The optimum reaction conditions were:70 ℃,20 mmol/L Na2WO4,pH=5,reaction time 90 min and n(H2O2)∶n(C4H2O3)=1∶0.9.The epoxidation rate measured by means of HPLC was over 90%.