摘要
本文研究了灭幼脲(Ⅲ)在甲醇中的光解作用。以氮气和氧气作饱和气体时,灭幼脲(Ⅲ)在甲醇中的光化学反应均表现为一级动力学形式,其速率常数分别为0.118h^(-1)和0.129h^(-1);当光强为0.50和0.62cal/cm^2·min时,其半衰期分别为5.37和4.42h;灭幼脲(Ⅲ)在甲醇中光解的主要产物包括:邻氯苯甲酰胺,N-苯基氨基甲酸甲酯,N-(对氯苯基)氨基甲酸甲酯以及对氯苯基脲等。本文还对灭幼脲(Ⅲ)在甲醇中的光化学反应机理作了初步探讨。
The photoreaction of 2-chloro-N(((4-chlorophenyl)-amino) car-bonyl)benzamide in methanol has been studied in this paper.The rate constants of its reactions, which are found both of first order, in methanol solution saturated with N2 or O2 upon irradiation with Xenon lamp, are determined to be 0.118 and 0.129 h-1 respectively. The half life of this compound changes from 5.37 to 4.42h-1 when the light intensity is changed from 0.50 to 0.62 cal/cm2 · min. The main photoproducts identified are 2-chlorobenzamide, N-phenyl methyl-ca.rbamate,(N-(4-chloro phenyl)methylcarbamate,4-chlorophenyl urea etc.Meanwhile, the mechanism of the photochemical reaction of this compound in methanol has been discussed.
出处
《环境化学》
CAS
CSCD
北大核心
1992年第3期7-15,共9页
Environmental Chemistry
关键词
灭幼脲(Ⅲ)
光解
甲醇
水质监测
1-(2-chlorobenzoyl)-3-(4-chlorophenyl)urea, photolysis, kinetics
