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The Attractiveness of the Ternary Rh-Pd-Pt Alloys for CO Oxidation Process Full article

Journal Processes
ISSN: 2227-9717
Output data Year: 2020, Volume: 8, Number: 8, Article number : 928, Pages count : 20 DOI: 10.3390/pr8080928
Tags ternary alloys; synthesis; single precursor; thermolysis; phase diagram; catalytic activity
Authors Vedyagin Aleksey A. 1 , Shubin Yury V. 2 , Kenzhin Roman M. 1 , Plyusnin Pavel E. 2 , Stoyanovskii Vladimir O. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Department of Materials Science and Functional Materials
2 Nikolaev Institute of Inorganic Chemistry SB RAS, Department of Chemistry of Coordination, Cluster and Supramolecular Compounds

Funding (1)

1 Russian Science Foundation 16-13-10192

Abstract: Ternary alloys of platinum group metals attract a growing interest due to their unique catalytic properties. The present research is aimed to synthesize a series of Rh-Pd-Pt alloys with varied ratios of metals using a single-source precursor approach. Rhodium and palladium are partly miscible metals, while each of these metals is unlimitedly miscible with platinum. Thermolysis of complex salts used as a precursor results in the formation of metastable systems. The 3D nanostructure alloys are being formed after the complete decomposition of the single-source precursor. High-resolution transmission electron microscopic studies have shown that the nanoalloys are composed of interconnected polycrystalline ligaments with a mean diameter of 50 nm. The single-phase composition is confirmed by an X-ray diffraction analysis. The ratio of metals plays an important role in determining the catalytic activity of alumina-supported alloys and their thermal stability. According to UV-vis spectroscopy data, the higher palladium portion corresponds to worse dispersion of initially prepared, fresh catalysts. Treatment of the catalysts under prompt thermal aging conditions (up to 800 °C) causes redispersion of palladium-rich alloyed nanoparticles, thus leading to improved catalytic activity and thermal stability.
Cite: Vedyagin A.A. , Shubin Y.V. , Kenzhin R.M. , Plyusnin P.E. , Stoyanovskii V.O.
The Attractiveness of the Ternary Rh-Pd-Pt Alloys for CO Oxidation Process
Processes. 2020. V.8. N8. 928 :1-20. DOI: 10.3390/pr8080928 WOS Scopus РИНЦ AN OpenAlex
Files: Full text from publisher
Dates:
Submitted: Jul 8, 2020
Accepted: Jul 30, 2020
Published print: Aug 2, 2020
Published online: Aug 2, 2020
Identifiers:
Web of science: WOS:000564773200001
Scopus: 2-s2.0-85089776108
Elibrary: 45342147
Chemical Abstracts: 2020:2554692
OpenAlex: W3046596161
Citing:
DB Citing
Scopus 12
Web of science 12
Elibrary 14
OpenAlex 12
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