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首页> 外文期刊>Archives of Metallurgy and Materials >Kinetics and Mechanism of the Redox Reaction Between Pt(IV) Chloride Complex Ions and Sodium Thiosulfate in Aqueous Solution. Part I: Acidic Solution/ Kinetyka I Mechanizm Reakcji Redox Pomi?dzy Chlorkowymi Jonami Kompleksowymi Pt(Iv) I Tiosiarczanem Sodu W Roztworach Wodnych. Cz??? I: Roztwór Kwa?ny
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Kinetics and Mechanism of the Redox Reaction Between Pt(IV) Chloride Complex Ions and Sodium Thiosulfate in Aqueous Solution. Part I: Acidic Solution/ Kinetyka I Mechanizm Reakcji Redox Pomi?dzy Chlorkowymi Jonami Kompleksowymi Pt(Iv) I Tiosiarczanem Sodu W Roztworach Wodnych. Cz??? I: Roztwór Kwa?ny

机译:氯化铂(IV)络合物离子与硫代硫酸钠水溶液之间的氧化还原反应动力学和机理第一部分:水溶液中氯化物复合离子Pt(Iv)与硫代硫酸钠之间的酸性溶液/氧化还原反应的动力学和机理。嗨??? I:酸溶液

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In this work, spectrophotometric studies of the kinetics and mechanism of reaction between [PtCl6]2- complex ions and sodium thiosulfate, were carried out. The influence of different conditions, such as: initial concentrations of reductant and platinum(IV) complex ions, ionic strength, pH and temperature on the rate constant, was experimentally determined. From the obtained results, the molecularity of the first elementary step, value of the enthalpy and entropy of activation in Eyring equation as well as corresponding rate equation, were experimentally determined. It was found that the reaction is relatively slow and leads to the S, Pt and PtS colloids formation. The best conditions for solid phase formation containing Pt are at pH = 5.
机译:在这项工作中,对[PtCl6] 2-络合物离子与硫代硫酸钠之间的反应动力学和反应机理进行了分光光度研究。实验确定了不同条件的影响,例如:还原剂和铂(IV)络合物离子的初始浓度,离子强度,pH和温度对速率常数的影响。从获得的结果中,实验确定了第一步的分子量,Eyring方程以及相应的速率方程中的活化焓和活化熵值。发现反应相对缓慢并且导致S,Pt和PtS胶体形成。含有Pt的固相形成的最佳条件是pH = 5。

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