Role of PdOx and RuOy Clusters in Oxygen Exchange between Nanocrystalline Tin Dioxide and the Gas Phase Full article
Journal |
The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455 |
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Output data | Year: 2013, Volume: 117, Number: 45, Pages: 23858-23867 Pages count : 10 DOI: 10.1021/jp408646k | ||||||||||
Tags | Activation energy; Diffusion; Nanocrystalline alloys; Ruthenium; Sol-gels; Tin | ||||||||||
Authors |
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Affiliations |
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Funding (1)
1 | The Ministry of Education and Science of the Russian Federation | 14.B37.21.0087 |
Abstract:
The effect of palladium- and ruthenium-based clusters on nanocrystalline tin dioxide interaction with oxygen was studied by temperature-programmed oxygen isotopic exchange with mass-spectrometry detection. The modification of aqueous sol–gel prepared SnO2 by palladium and, to a larger extent, by ruthenium, increases surface oxygen concentration on the materials. The revealed effects on oxygen exchange—lowering the threshold temperature, separation of surface oxygen contribution to the process, increase of heteroexchange rate and oxygen diffusion coefficient, decrease of activation energies of exchange and diffusion—were more intensive for Ru-modified SnO2 than in the case of SnO2/Pd. The superior promoting activity of ruthenium on tin dioxide interaction with oxygen was interpreted by favoring the dissociative O2 adsorption and increasing the oxygen mobility, taking into account the structure and chemical composition of the modifier clusters.
Cite:
Marikutsa A.V.
, Rumyantseva M.N.
, Frolov D.D.
, Morozov I.V.
, Boltalin A.I.
, Fedorova A.A.
, Petukhov I.A.
, Yashina L.V.
, Konstantinova E.A.
, Sadovskaya E.M.
, Abakumov A.M.
, Zubavichus Y.V.
, Gaskov A.M.
Role of PdOx and RuOy Clusters in Oxygen Exchange between Nanocrystalline Tin Dioxide and the Gas Phase
The Journal of Physical Chemistry C. 2013. V.117. N45. P.23858-23867. DOI: 10.1021/jp408646k WOS Scopus РИНЦ
Role of PdOx and RuOy Clusters in Oxygen Exchange between Nanocrystalline Tin Dioxide and the Gas Phase
The Journal of Physical Chemistry C. 2013. V.117. N45. P.23858-23867. DOI: 10.1021/jp408646k WOS Scopus РИНЦ
Dates:
Submitted: | Aug 29, 2013 |
Accepted: | Oct 2, 2013 |
Published online: | Oct 30, 2013 |
Published print: | Nov 14, 2013 |
Identifiers:
Web of science | WOS:000327110500046 |
Scopus | 2-s2.0-84887859021 |
Elibrary | 21890355 |
Chemical Abstracts | 2013:1570941 |
Chemical Abstracts (print) | 159:688431 |
OpenAlex | W1969444503 |