摘要
本文研究了氯代苯酚和苯胺类化合物的光催化降解,探讨了这些有机污染物分子的氯取代和化合物毒性与光催化降解之间的关系。研究表明,氯代苯酚和苯胺类化合物的光催化降解均符合表观一级反应动力学模型。有机物分子中氯取代基的引入加快了化合物的光催化降解,且反应速率随氯取代基个数的增多而增大。光催化降解的表观速率常数与正辛醇-水分配系数之间存在有较好的线性关系:logk=alogKow+b,该模型可以用于有机污染物的光催化降解性预测。
The photocatalytic degradation of some chlorine substituted phenols and anilines were investigated in this paper. The effect of chlorine substitution on the photocatalytic degradation of the compounds, the relationship between the poisonous data and photocatalytie degradation were explored. The photocatalytic degradation of the compounds is in accordance with apparent first order reaction kinetics model well. Chlorine substitution in the organic compounds helps to the photocatalytie degradation of the pollutants, and the apparent reaction rate constant increases with the number of chlorine substitution. There is a better linear relationship between the apparent rate constants and octanol-water partition coefficients ,i. e. logk =logk=alogKow＋b,which could be used for the prediction of photocatalytic degradation of the pollutants using present Kowdata.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2009年第2期180-183,共4页
Chemical Research and Application
基金
重庆市科技攻关项目(CSTC2005AC7107)
关键词
氯苯酚
氯苯胺
光催化降解
分子结构
logKow
photocatalytic degradation
chlorine substituted phenols
chlorine substituted anilines
octanol-water partitioncoefficient
molecular structure
