| 对苯二甲酸臭氧化降解的动力学及机制研究 |
| 摘要点击 1378 全文点击 2402 投稿时间：2008-06-25 修订日期：2008-09-08 |
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| 中文关键词 对苯二甲酸 臭氧 速率常数 苯甲酸 降解 |
| 英文关键词 terephthalic acid(TA) ozonation rate constants benzoyl acid degradation |
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| 中文摘要 |
| 研究了臭氧化对苯二甲酸(TA)的降解效率,并对该过程的动力学特性和降解机制进行了探讨.结果表明，TA与臭氧的
反应速率常数ko3-TA为（0.047±0.001）L·（mol·s）-1,与羟基自由基的kOH-TA为2.28╳109L·（mol·s）-1以上结果与TA臭氧化降解的表观反应速率常数相一致.采用高效液相色谱(HPLC)和离子色谱(IC)分析了TA降解过程的中间产物,主要包括苯甲酸、酒石酸、甲酸和草酸,在此基础上提出了臭氧化TA的可能降解历程. |
| 英文摘要 |
| The effect of ozonation of trephthalic acid(TA) was evaluated, and the kinetic and mechanism of this process were also discussed The rate constants of TA with ozone and OH radicals calculated by the relative method are(0.047±0.010)L·(mol·s)-1and 2.28╳109L·(mol·s)-1,respectively.The above result was in accordance with the apparent reaction rate constant of ozonation of TA when the process was controlled by chemical reaction. Intermediates detrcted by high-performance liquid chromatography (HPLC)and ion chromatography (IC) included benzoic acid, tararic acid,formic acid and oxalic acid, therefore the possible destruction pathway of ozonation of TA was prposed on the basis of above results |
