Aggregation Features of Monodisperse Palladium Nanoparticles  Supported on g-Al2O3

Ye.Yu. Kalishyn; I.B. Bychko; Z.V. Kaidanovych; A.I. Trypolskyi; P.E. Strizhak; V.V. Ordynskyi

doi:10.15330/pcss.17.4.487-492

Authors

Ye.Yu. Kalishyn L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine
I.B. Bychko L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine
Z.V. Kaidanovych L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine
A.I. Trypolskyi L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine
P.E. Strizhak L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine
V.V. Ordynskyi L.V. Pisarzhevskii Institute of the Physical Chemistry of the National Academy of Sciences of Ukraine

DOI:

https://doi.org/10.15330/pcss.17.4.487-492

Keywords:

palladium nanoparticles, catalyst preparation, aggregation, catalyst thermal stability

Abstract

The production of supported on γ-A1₂O₃ palladium catalysts by colloidal solution deposition method have been improved. Influence of temperature on the structure and dispersion characteristics of supported nanosized palladium particles during catalyst preparation and activation was investigated. It has been shown that at temperatures below 300^oC monodisperse particles palladium catalysts are stable. Further temperature increase leads to aggregation of monodisperse metal nanoparticles by the mechanism of reaction-limited aggregation (RLA) to form polydisperse system.

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