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Kinetic Studies of Pt(IV) Chloride Complex Ions Reduction Reaction Using Potassium Formate

Wojnicki M., Żabiński P., Csapó Edit

Archives of Metallurgy and Materials

2020

Vol. 65, iss. 3

1135--1140

In this paper, the kinetics of the platinum(IV) chloride complex ions reduction reaction was studied. It was shown that the mechanism exhibits autocatalytic character. The presence of metallic platinum in the system significantly increases the reaction rate. The influence of the initial concentration of precursor, reductant, ionic strength, initial concentration of the chloride ions as well as the temperature on the process rate was investigated. The activation energy was determined and is equal to 93.57 kJ/mol. Moreover, the obtained metallic phase was analyzed, and it was observed that it has a micrometric size.