Oxidation of a platinum foil with nitrogen dioxide


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Abstract

The oxidation of a polycrystalline platinum foil by nitrogen dioxide at an NO2 pressures of 10–6–10–4 mbar and a temperature of 525 K has been investigated by X-ray photoelectron spectroscopy (XPS). Under these conditions, the platinum oxides PtO and Pt3O4 form on the foil surface. A comparison between the data obtained in this study and the data on the oxidation of platinum nanoparticles suggests a hypothesis as to the causes of the size effect in the oxidation of NO over platinum catalysts.

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About the authors

A. V. Kalinkin

Boreskov Institute of Catalysis, Siberian Branch

Author for correspondence.
Email: avkalinkin@mail.ru
Russian Federation, Novosibirsk, 630090

M. Yu. Smirnov

Boreskov Institute of Catalysis, Siberian Branch

Email: avkalinkin@mail.ru
Russian Federation, Novosibirsk, 630090

V. I. Bukhtiyarov

Boreskov Institute of Catalysis, Siberian Branch

Email: avkalinkin@mail.ru
Russian Federation, Novosibirsk, 630090

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