臭氧氧化MTBE反应动力学及其特性研究

文章针对汽油添加剂甲基叔丁基醚对环境日益严重的污染问题,在臭氧氧化MTBE反应机理研究的基础上,对反应特性及其中间产物进行了研究。动力学研究与实验结果均表明,O3氧化MTBE为准二级反应,加入H2O2,能降低反应活化能,提高反应速率,减少臭氧投加量;采用GC/FID检测MTBE及其氧化产物,以GC保留时间确定臭氧氧化MTBE的可能中间产物为叔丁醇、叔丁基甲酯及丙酮等。

Research on kinetics and properties of the reaction of MTBE with ozone

Oxidation of methyl tert-butyl ether(MTBE),a common additive to gasoline,which is one of organic pollutants in the environment,was investigated.Based on the ozonation mechanism of MTBE,the oxidation properties and the intermediates were investigated.It is shown by kinetic analysis and experiment that the process of MTBE's oxidizing by O__3 was a quasi-second order reaction,and that adding H__2O__2 could reduce activation energy,raise the reacting rate and cut down the adding quantity of ozone.The MTBE and its ozonation intermediates were analyzed by gas chromatography/hydrogen flame ionization detector(GC/FID).With the retention time of GC,it was identified that oxidative intermediates of MTBE perhaps were tert-butyl alcohol,tert-butyl formate,acetone,etc.