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Citation: Zeng Yue, Zheng Yang-Cun, Yi Jian-Long, Yu Shang-Ci, Yang Chun-Ming, Li Ze-Lin. Kinetics and Mechanism of Hypophosphite Electrooxidation on a Nickel Electrode[J]. Acta Physico-Chimica Sinica, ;2003, 19(08): 718-722. doi: 10.3866/PKU.WHXB20030809 shu

Kinetics and Mechanism of Hypophosphite Electrooxidation on a Nickel Electrode

1.
Department of Chemistry, Hunan Normal University, Changsha　410006

Received Date: 22 January 2003
Available Online: 15 August 2003

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 under es an H abstraction of hypophosphite from the P－H bond to form the phosphorus-centered radical, PHO2－•,which subsequently is electrochemically reacted with water to form the final product, phosphite. The kinetic equations 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.
- Kinetics;Mechanism;Hypophosphite;Electrooxidation;Nickel electrode
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