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The reduction kinetics of pertechnetate by thiocyanate in perchloric acid medium

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Abstract

The reduction kinetics of pertechnetate by thiocyanate in perchloric acid is studied by spectrophotometric method. The effect of the concentrations of pertechnetate, hydrogen ion and thiocyanate on the reaction rate is investigated. The kinetic expression at 25°C is: −dC VII/dt=(2.2±0.4)·10−3 [TcO4 −]1.1 [H+]3.2 [SCN−]3.3 The effect of temperature on the reaction rate is studied. The activation energy is 91 kJ/mol. The possible mechanism of the reaction is discussed.

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Authors and Affiliations

  1. China Institute of Atomic Energy, P.O. Box 275(26), 102413, Beijing, P. R. China

    Jia Yongfen, Zhang Pilu, Zhu Zhixuan & Wang Fangding

  2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, P.O. Box 525 (75), 61003, Chengdu, P. R. China

    Fu Yibei

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  1. Jia Yongfen
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  2. Zhang Pilu
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  3. Zhu Zhixuan
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  4. Fu Yibei
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  5. Wang Fangding
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Yongfen, J., Pilu, Z., Zhixuan, Z. et al. The reduction kinetics of pertechnetate by thiocyanate in perchloric acid medium. J Radioanal Nucl Chem 229, 173–177 (1998). https://doi.org/10.1007/BF02389470

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  • DOI: https://doi.org/10.1007/BF02389470

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