Influence of phosphorus concentration on the state of the surface layer of Pd–P hydrogenation catalysts
- Authors: Belykh L.B.1, Skripov N.I.1, Sterenchuk T.P.1, Akimov V.V.2, Tauson V.L.2, Schmidt F.K.1
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Affiliations:
- Irkutsk State University
- A.P. Vinogradov Institute of Geochemistry, Siberian Branch
- Issue: Vol 86, No 9 (2016)
- Pages: 2022-2032
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/216112
- DOI: https://doi.org/10.1134/S1070363216090073
- ID: 216112
Cite item
Abstract
Phase composition and surface layer state of the Pd–P hydrogenation catalyst formed at various P/Pd ratios from Pd(acac)2 and white phosphorus in a hydrogen atmosphere were determined. Palladium on the catalyst surface is mainly in two chemical states: as Pd(0) clusters and as palladium phosphides. As the P/Pd ratio increases, the fraction and size of palladium clusters decrease, and also the phase composition of formed palladium phosphides changes: Pd3P0.8 → Pd5P2 → PdP2. The causes of the modifying action of phosphorus on the properties of palladium catalysts for hydrogenation of unsaturated compounds were considered.
Keywords
About the authors
L. B. Belykh
Irkutsk State University
Author for correspondence.
Email: belykh@chem.isu.ru
Russian Federation, ul. K. Marksa 1, Irkutsk, 664003
N. I. Skripov
Irkutsk State University
Email: belykh@chem.isu.ru
Russian Federation, ul. K. Marksa 1, Irkutsk, 664003
T. P. Sterenchuk
Irkutsk State University
Email: belykh@chem.isu.ru
Russian Federation, ul. K. Marksa 1, Irkutsk, 664003
V. V. Akimov
A.P. Vinogradov Institute of Geochemistry, Siberian Branch
Email: belykh@chem.isu.ru
Russian Federation, Irkutsk
V. L. Tauson
A.P. Vinogradov Institute of Geochemistry, Siberian Branch
Email: belykh@chem.isu.ru
Russian Federation, Irkutsk
F. K. Schmidt
Irkutsk State University
Email: belykh@chem.isu.ru
Russian Federation, ul. K. Marksa 1, Irkutsk, 664003