无水条件下气相三氯乙烯的光催化降解机理  

The Mechanism of Semiconductor Photocatalytic Degradation of Gaseous Trichloroethylene Without Water

作　　者：刘鸿[1] 成少安[1] 王琪全[1] 张鉴清[1] 蒋伟川[1] 

机构地区：[1]浙江大学化学系

出　　处：《环境科学》1998年第2期62-65,共4页Environmental Science

基　　金：浙江省自然科学基金

摘　　要：研究无水条件下气相三氯乙烯（ＴＣＥ）的光催化降解反应及其机理，结果表明三氯乙烯的降解产物为ＨＣｌ、ＣＯ２及Ｃｌ２，光催化降解速率方程符合Ｌａｎｇｍｕｉｒ－Ｈｉｎｓｈｅｌｗｏｏｄ公式。The photocatalytic degradation of trichloroethylene(TCE) in the gas phase without water using anatase titanium dioxide powder as catalyst was studied.It was proved that the products were HCl,CO 2 and Cl 2.The equation of photocatalytic degradation agreed with Langmuir Hinshelwood rate form.Reaction schemes of TCE were proposed as valence band hole direct oxidation.

关 键 词：二氧化钛 光催化 三氯乙烯 降解 催化剂 

分 类 号：TQ426.7[化学工程]