Structure and properties of Pd–Mn hexaaluminate catalysts modified with platinum for the high-temperature oxidation of methane


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Abstract

The effect of Pt additives on the catalytic characteristics of a Pd-containing catalyst based on manganese hexaaluminate was studied. It was found that the bimetallic PtPd-containing catalysts based on MnLaAl11O19 with the Pt/Pd atomic ratio smaller than 0.25 exhibited a comparable or somewhat smaller activity in the methane oxidation, but their stability at elevated temperatures and gas flow rates was higher than that of the Pd-based catalyst. The state of the active constituent of the resulting catalysts was investigated. Main correlations between the state of the active component and the catalytic activity were revealed.

About the authors

S. A. Yashnik

Boreskov Institute of Catalysis, Siberian Branch

Author for correspondence.
Email: yashnik@catalysis.ru
Russian Federation, Novosibirsk, 630090

T. A. Surovtsova

Boreskov Institute of Catalysis, Siberian Branch

Email: yashnik@catalysis.ru
Russian Federation, Novosibirsk, 630090

A. V. Ishchenko

Boreskov Institute of Catalysis, Siberian Branch

Email: yashnik@catalysis.ru
Russian Federation, Novosibirsk, 630090

V. V. Kaichev

Boreskov Institute of Catalysis, Siberian Branch

Email: yashnik@catalysis.ru
Russian Federation, Novosibirsk, 630090

Z. R. Ismagilov

Boreskov Institute of Catalysis, Siberian Branch; Institute of Coal Chemistry and Chemical Materials Science, Siberian Branch

Email: yashnik@catalysis.ru
Russian Federation, Novosibirsk, 630090; Kemerovo, 650000

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