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LOW-TEMPERATURE CARBONIZATION OF ACTIVE CENTERS IS THE REASON OF Pd/C CATALYSTS DEACTIVATION

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Abstract

Physicochemical and catalytic properties of Pd/C catalysts before and after the deactivation as a result of a dimethylbenzylamine debenzylation–acylation reaction are compared. A comprehensive analysis conducted by a number of methods (chemisorption, X-ray photoelectron spectroscopy, electron microscopy, X-ray diffraction) showed that a tenfold loss of the catalyst activity in the reaction conducted in soft conditions (atmospheric H2 pressure, 25 °C) is related to the formation of a nanoscale graphite phase. While this phenomenon is common for high temperature reactions, it is first discovered at low temperatures.

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Funding

The work was partially performed within the Government Contract of Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences (projects No. 0303-2016-0001 and 0303-2016-0004, 19-03-00595).

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Authors and Affiliations

  1. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

    S. Yu. Troitskii, A. V. Nartova & E. M. Moroz

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  1. S. Yu. Troitskii
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  2. A. V. Nartova
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  3. E. M. Moroz
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Correspondence to S. Yu. Troitskii.

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Troitskii, S.Y., Nartova, A.V. & Moroz, E.M. LOW-TEMPERATURE CARBONIZATION OF ACTIVE CENTERS IS THE REASON OF Pd/C CATALYSTS DEACTIVATION. J Struct Chem 62, 163–170 (2021). https://doi.org/10.1134/S0022476621010194

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  • DOI: https://doi.org/10.1134/S0022476621010194

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