E-beam radiolysis of aqueous dimethyl phthalate solution  

作　　者：LIU Ning XU Gang MA Jing TANG Liang YUAN Qing WANG Liang BAI Yulei WU Minghong 

机构地区：[1]Institute of Applied Radiation,School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China

出　　处：《Nuclear Science and Techniques》2011年第1期35-38,共4页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China (No. 40830744 and 40973073);National Key Technology R&D Program in the 11th Five-year Plan of China (No.2008BAC32B03);Shanghai Leading Academic Discipline Project (No.S30109);Science and Technology Commission of Shanghai Municipality (No. 09ZR1411300;A.10-0111-07-003)

摘　　要：To investigate the influence of radiolysis on kinetics and factors of dimethyl phthalate(DMP),the aqueous DMP solution is degraded by 1.8 MeV E-beam,following pseudo-first-order kinetics.The rate constant of DMP degradation decreased exponentially with increasing initial DMP concentration.The DMP is favorably degraded by radical scavengers under its low concentration and alkaline condition.At high doses,the DMP is attacked by eaq-and ·OH,producing monomethyl phthalate,phthalate acid,and a series of aliphatic carboxylic acids,which are completelymineralized into H2O and CO2.To investigate the influence of radiolysis on kinetics and factors of dimethyl phthalate（DMP）,the aqueous DMP solution is degraded by 1.8 MeV E-beam,following pseudo-first-order kinetics.The rate constant of DMP degradation decreased exponentially with increasing initial DMP concentration.The DMP is favorably degraded by radical scavengers under its low concentration and alkaline condition.At high doses,the DMP is attacked by eaq-and ·OH,producing monomethyl phthalate,phthalate acid,and a series of aliphatic carboxylic acids,which are completelymineralized into H2O and CO2.

关 键 词：邻苯二甲酸二甲酯 电子束 一级动力学 水 辐解 自由基清除剂 DMP 脂肪族羧酸 

分 类 号：TQ456.3[化学工程—农药化工] TN141.32[电子电信—物理电子学]