Kinetics and mechanism of hydrogen peroxide decomposition in the presence of the tetraaquapalladium(<Emphasis Type="SmallCaps">II</Emphasis>) complex |
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Authors: | V V Potekhin S N Solov'eva V M Potekhin |
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Institution: | (1) St. Petersburg State Technological Institute, Technical University, 26 Moskovsky prosp., 198013 St. Petersburg, Russian Federation |
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Abstract: | Kinetics of hydrogen peroxide decomposition in the presence of the tetraaquapalladium(II) complex in an aqueous solution at
40–70 °C was studied. The reaction rate is the first order with respect to the concentration of both PdII and H2O2 and the negative first order with respect to perchloric acid. Using free radicals traps, the reaction mechanism was found
to differ from the traditional free-radical mechanism known for d-metal aqua ions and proceeds without generation of hydroxyl
radicals. The kinetic data obtained suggest a mechanism involving the formation of an intermediate palladium complex with
oxygen.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1077–1082, May, 2005. |
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Keywords: | hydrogen peroxide II) complex" target="_blank">tetraaquapalladium(II) complex catalysis |
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