摘要
用停止流动分光光度法在pH=9.89-10.70范围内,研究了商铁酸钾氧化乙醇胺反应的动力学及其机理.研究结果表明:反应对高铁酸钾和乙醇胺均为一级;对OH^-为负分数级;离子强度对速率没有影响.提出了一个包含有离子与分子间通过氢桥进行双电子转移的反应机理,由此导出了能圆满解释所有实验事实的速率方程,并求得了有关的速率常数.
The kinetics and mechanism of oxidation of ethanolamide by potassium ferrate(Ⅵ)in the pH range of 9.89 to 10.70 has been investigated spectrophotometricallyby the stoppedflow method.The order both with respect to potassium ferrate andethanolamide was found to be unity and that with respect to OH a negative fraction.There was no effect on the variation of ionic strength.A mechanism which includesa twoelectron transfer throngh hydrogen bridge between the ion and the molecule wassuggested.The rate equation derived from this mechanism can explain all the ob-served experimental facts satisfactorily and some rate constants were obtained.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1993年第1期70-76,共7页
Acta Physico-Chimica Sinica
关键词
停止流动法
高铁酸钾
乙醇胺
氧化
Kinetics and Mechanism
Stopped-flow method
Potassium ferrate
Ethanolamide
