【摘要】 以30%过氧化氢作为氧化剂,在相转移试剂和磷钨酸催化剂作用下催化油酸制备壬二酸,考察催化剂磷钨酸用量、过氧化氢用量、溶液pH值、相转移试剂用量、反应温度等因素对壬二酸产率的影响。结果表明,最佳合成条件是:每100g油酸中催化剂磷钨酸用量2.0g、30%过氧化氢用量400mL、相转移试剂用量10g,溶液pH值5.0～6.2,磷钨酸催化剂重复使用次数不超过3次,反应温度控制在95～105℃。在该反应条件下,壬二酸的产率可达到68.4%。更多还原

【Abstract】 Azelaic acid was prepared through oxidation of oleic acid with 30% aqueous hydrogen peroxide,and in the presence of phase transfer agent and phosphor-tungstenic acid catalyst.The effects of catalyst dosage,the amounts of hydrogen peroxide and phase transfer agent,the pH value of the solution,the reuse of catalyst and the reaction temperature on the azelaic acid yield were investigated.Test results showed that under the optimum conditions of using per 100g oleic acid,adding 2.0g of phosphor-tungstenic acid catalyst,400mL of 30% aqueous hydrogen peroxide,10g of phase transfer agent,controlling the solution pH in a range of 5.0—6.2 and the reaction temperature in the range of 95—105℃,the yield of azelaic acid could reach 68.4%.Furthermore,the reuse of catalyst should not be over 3 times.更多还原