间硝基苯胺的催化降解动力学研究

Studies on the kinetics and the catalytic degradation of meta-nitroaniline by Fenton's reagent

研究了Fenton试剂催化作用下间硝基苯胺的降解反应,考察了影响降解的一些因素.在适宜的实验条件下,间硝基苯胺的降解去除率可达97 5%以上.用一元线性回归方程,对不同氧化降解时间后间硝基苯胺的相对残余浓度对反应时间的相关性进行了定量分析,间硝基苯胺的催化氧化降解符合一级反应动力学模式,得到了该反应的表观速率常数和活化能.利用紫外光谱对降解反应机理进行了初步探讨.

was studied The catalytic degradation reaction of meta - nitroaniline with Fenton＇s reagent Some factors that influence the catalytic degradation reaction were researched The degradation removal ratio of meta-nitroaniline was higher than 97.5% under optimal experimental conditions. The correlativity of the reaction time and the remaining concentration of meta- nitroaniline were analyzed by the unitary hnear regress equation. The result of the analysis proved that the degradation of meta- nitroaniline by Fenton＇s reagent was in conformity with first - order dynamics model. The apparent first - order rate constants and activation energy were calculated. The degradation mechanism of meta- nitroaniline was discussed by ultraviolet spectrum.