摘要
在优化的实验条件下分别从产物和反应物 2方面进行分析 ,系统地研究了硫酸浓度为 6 .42 5 mol/ L和 7.7mol/ L时 Ce4 + / Ce3 + 作氧化媒质间接电氧化对氯甲苯的有机氧化动力学 ,确定出总反应为表观 1级反应、并拟合出了相应的表观反应速率常数和表观活化能。当硫酸介质浓度从 6 .42 5 mol/ L增至 7.7mol/ L时表观活化能显著降低 (从 12 2～ 12 8k J/ mol降低到 84～ 89k J/ mol)从而大大加速了化学反应速率。
The oxidation kinetics of p-chlorotoluene into p-chlorobenzaldehyde using ceric/cerous oxidation media was studied. The kinetics parameters such as apparent reaction order, apparent reaction rate constant and apparent activation energy were attained as well. The apparent activation energy was decreased noticeably from 128.75 kJ/mol down to 84.71 kJ/mol with the increasing concentration of sulfuric acid from 6.425 mol/L up to 7.70 mol/L and was likely the key reason that accelerates the oxidation reaction rate.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2002年第4期358-362,共5页
Chemical Reaction Engineering and Technology
基金
河南省杰出青年基金项目 (98年度 )
