CAJ | 학술논문

用电化学质谱 (EMS)和动力学模型分析等方法研究了次亚磷酸根在镍电极上的电化学氧化机理和动力学.研究表明,次亚磷酸根的电化学氧化是通过从 P- H键脱离一个原子 H,形成磷中心自由基 (),而磷中心自由基 ()进一步进行电化学反应形成最终产物亚磷酸.利用该模型,推导出相关动力学方程并通过与实验数据拟合获得动力学参数.结果表明,该模型能很好地模拟次亚磷酸根在镍电极上的电化学氧化过程.
용전화학질보 (EMS)화동역학모형분석등방법연구료차아린산근재얼전겁상적전화학양화궤리화동역학.연구표명,차아린산근적전화학양화시통과종 P- H건탈리일개원자 H,형성린중심자유기 (),이린중심자유기 ()진일보진행전화학반응형성최종산물아린산.이용해모형,추도출상관동역학방정병통과여실험수거의합획득동역학삼수.결과표명,해모형능흔호지모의차아린산근재얼전겁상적전화학양화과정.
Kinetics and mechanism of hypophosphite oxidation on a nickel electrode were studied by means of the electrochemical mass spectroscopy (EMS) and kinetic model analysis.In the kinetic model,the electrooxidation of hypophosphite undergoes an H abstraction of hypophosphite from the P- H bond to form the phosphorus-centered radical,,which subsequently is electrochemically reacted with water to form the final product,phosphite.The kinetic eq-uations were derived,and the kinetic parameters were obtained from a comparison of experimental results and the kinetic equations.The process of hypophosphite electrooxidation on a nickel electrode could be well simulated by this model.