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Model of the catalytic reaction 2H2 + O2 → H2O with the participation of molecules in a precursor state

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Abstract

The absence of experimental evidence for the occurrence of the catalytic reaction 2H2 + O2 → 2H2O on platinum in accordance with the Langmuir-Hinshelwood mechanism was established. It was found that the heterogeneous process can be described more adequately and its nature can be better understood with consideration for chemical transformations involving molecules in a precursor state in a model of the above reaction. The inverse kinetic problem was solved. It was found that the model in which an unambiguously specified set of rate constants for the elementary steps of the reaction was used provided an opportunity to describe experimental data obtained by various authors concerning the oxidation of hydrogen on platinum over the detonating gas pressure range 10−3-105 Pa. The signs of the occurrence of heterogeneous reactions by an adsorption mechanism were found.

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  1. Orel State Technical University, Orel, Russia

    V. F. Kharlamov & F. V. Kharlamov

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  1. V. F. Kharlamov
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  2. F. V. Kharlamov
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Original Russian Text © V.F. Kharlamov, F.V. Kharlamov, 2007, published in Kinetika i Kataliz, 2007, Vol. 48, No. 3, pp. 454–462.

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Kharlamov, V.F., Kharlamov, F.V. Model of the catalytic reaction 2H2 + O2 → H2O with the participation of molecules in a precursor state. Kinet Catal 48, 430–438 (2007). https://doi.org/10.1134/S0023158407030123

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  • DOI: https://doi.org/10.1134/S0023158407030123

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