以钒酸盐为催化剂、苄基三乙基溴化铵(TEBA)为相转移催化剂,通过硝酸氧化油酸合成壬二酸。结果表明,硝酸氧化油酸合成壬二酸的适宜操作条件为:催化剂质量分数为0.30%、TEBA质量分数为0.10%、硝酸质量分数为65%、硝酸与油酸的摩尔比为8.0、反应温度为100℃、反应时间为12 h,此时壬二酸产率达67.81%,壬酸产率达74.31%。将含催化剂的结晶母液循环使用,壬二酸的产率可提高到71%左右。

Azelaic acid is synthesized via the oxidation of oleic acid by nitric acid,with vanadate serving as the catalyst and benzyl triethylammonium bromide (TEBA) acting as the phase transfer catalyst.Results demonstrate that the optimal operating conditions for the synthesis of azelaic acid via the oxidation of oleic acid with nitric acid are determined as follows:vanadate catalyst loading is 0.30%,TEBA loading is 0.10%,the concentration of nitric acid is 65%,the molar ratio of nitric acid to oleic acid is 8.0,the concentration of oleic acid is 8.0%,temperature is 100℃ and the reaction lasts for 12 hours.Under these conditions,the yields of nonanedioic acid and azelaic acid are 74.31% and 67.81%,respectively.The yield of azelaic acid can be increased to approximately 71% by recycling the crystalline mother liquor containing the catalyst.

卫杰(1996-),男,硕士生,主要从事精细化工研究,2457488786@qq.com;沈国良(1960-),男,博士,教授,主要从事化学工艺、精细化工方面的研究,通讯联系人,shengl＿shxy@sut.edu.cn。