Platinum Nanoparticles on Al2O3: Correlation Between the Particle Size and Activity in Total Methane Oxidation Full article
Journal |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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Output data | Year: 2009, Volume: 268, Number: 1, Pages: 60-67 Pages count : 8 DOI: 10.1016/j.jcat.2009.09.001 | ||
Tags | Catalytic oxidation, Methane, Nanoparticles, Platinum, Size effect | ||
Authors |
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Affiliations |
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Funding (7)
1 | Russian Foundation for Basic Research | 09-03-01012 |
2 | Russian Foundation for Basic Research | 08-03-01150 |
3 | Russian Foundation for Basic Research | 08-03-01016 |
4 | The Ministry of Education and Science of the Russian Federation | 02.513.11.3203 |
5 | The Ministry of Education and Science of the Russian Federation | 02.518.11.7128 |
6 | Президиум РАН | 27.12 |
7 | Президиум РАН | 27.51 |
Abstract:
Catalytic activity of the size-controlled platinum nanoparticles supported on the acid-pretreated γ-alumina has been tested in complete methane oxidation under lean conditions. The mean sizes of platinum particles varied from 1.3 to 10 nm with the narrow size distribution (TEM data). It has been found that the reaction under study is strongly size sensitive. The size dependence of the specific catalytic activity is narrow and bell-shaped, with the maximum TOF value observed for the catalysts containing partially oxidized platinum with the mean particle sizes of about 2 nm. The observed strong size sensitivity is shown to originate from the size dependence of the apparent activation energy of the methane oxidation and/or the platinum oxidation state in the catalytically active nanoparticles.
Cite:
Bekk I.E.
, Bukhtiyarov V.I.
, Pakharukov I.Y.
, Zaikovsky V.I.
, Kriventsov V.V.
, Parmon V.N.
Platinum Nanoparticles on Al2O3: Correlation Between the Particle Size and Activity in Total Methane Oxidation
Journal of Catalysis. 2009. V.268. N1. P.60-67. DOI: 10.1016/j.jcat.2009.09.001 WOS Scopus РИНЦ
Platinum Nanoparticles on Al2O3: Correlation Between the Particle Size and Activity in Total Methane Oxidation
Journal of Catalysis. 2009. V.268. N1. P.60-67. DOI: 10.1016/j.jcat.2009.09.001 WOS Scopus РИНЦ
Dates:
Submitted: | Jul 24, 2009 |
Accepted: | Sep 4, 2009 |
Published online: | Oct 8, 2009 |
Published print: | Nov 15, 2009 |
Identifiers:
Web of science | WOS:000272349000007 |
Scopus | 2-s2.0-71549115198 |
Elibrary | 15303761 |
Chemical Abstracts | 2009:1351128 |
Chemical Abstracts (print) | 152:15418 |
OpenAlex | W1998831406 |