CO Oxidation over Titania-Supported Gold Catalysts Obtained using Polyoxometalate Full article
| Journal |
Reaction Kinetics, Mechanisms and Catalysis
ISSN: 1878-5190 , E-ISSN: 1878-5204 |
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| Output data | Year: 2021, Volume: 132, Number: 1, Pages: 171-185 Pages count : 15 DOI: 10.1007/s11144-020-01881-x | ||
| Tags | Polyoxometalates; titania support; gold catalysts; TEM characterization; thermal stability | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2017-2020 |
Abstract:
The present work is devoted to the development of a versatile method of Au/TiO2 catalysts preparation using a polyoxometalate-based approach. It has been shown that the addition of polyoxometalates into an aqueous solution of Au3+ hydroxocomplexes has an evident stabilizing effect. Due to specified preparation conditions, the choice of the polyoxometalates is quite limited. The most convenient for this purpose compounds are niobium- and tungsten-containing polyoxometalates. Depending on preparation conditions and textural properties of used TiO2, dispersion of deposited gold particles can be varied within a range of 1-50 nm. The catalytic activity of the prepared Au/TiO2 catalysts is studied in a model reaction of CO oxidation. Besides the dispersion of Au particles, another key factor affecting the low-temperature activity of the Au/TiO2 catalysts in the CO oxidation is a reduction stage in the preparation procedures. Replace of hydrogen with CO results in the formation of more active and stable nanoparticles.
Cite:
Maksimov G.M.
, Gerasimov E.Y.
, Kenzhin R.M.
, Saraev A.A.
, Kaichev V.V.
, Vedyagin A.A.
CO Oxidation over Titania-Supported Gold Catalysts Obtained using Polyoxometalate
Reaction Kinetics, Mechanisms and Catalysis. 2021. V.132. N1. P.171-185. DOI: 10.1007/s11144-020-01881-x WOS Scopus РИНЦ AN OpenAlex
CO Oxidation over Titania-Supported Gold Catalysts Obtained using Polyoxometalate
Reaction Kinetics, Mechanisms and Catalysis. 2021. V.132. N1. P.171-185. DOI: 10.1007/s11144-020-01881-x WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Aug 28, 2020 |
| Accepted: | Sep 24, 2020 |
| Published online: | Oct 1, 2020 |
| Published print: | Feb 14, 2021 |
Identifiers:
| Web of science: | WOS:000574365200001 |
| Scopus: | 2-s2.0-85091804828 |
| Elibrary: | 45257068 |
| Chemical Abstracts: | 2020:1979767 |
| OpenAlex: | W3090270647 |