In situ XPS Studies of Kinetic Hysteresis in Methane Oxidation over Pt/γ-Al2O3 Catalysts Full article
| Conference |
11th European Workshop on Selective Oxidation - Selectivity in Oxidation - Key to New Resources Valorization (ISO) during the 12th European Congress on Catalysis - Balancing the Use of Fossil and Renewable Resources (Europacat) 30 Aug - 4 Sep 2015 , Kazan |
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| Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2016, Volume: 278, Number: Part 1, Pages: 135-139 Pages count : 5 DOI: 10.1016/j.cattod.2016.05.004 | ||||
| Tags | Concentration hysteresis, In situ X-ray photoelectron spectroscopy, Methane oxidation, Pt/Al2O3 | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Science Foundation | 14-13-01155 |
| 2 | Federal Agency for Scientific Organizations | V.45.3.2. |
| 3 | Federal Agency for Scientific Organizations | V.44.1.15. |
Abstract:
Recently, we have shown that methane oxidation over Pt/Al2O3 catalysts can proceed via two stable stationary regimes with low and high catalytic activity under identical external conditions. The switching between the regimes occurs abruptly and depends on the oxygen concentration and direction of its change at the constant methane concentration. In situ X-ray photoelectron spectroscopy (XPS) coupled with mass spectrometry was used to correlate changes in the oxidation state of platinum with catalytic activity in the methane oxidation. In situ XPS experiments confirmed the presence of the kinetic hysteresis even at the sub-millibar pressure range (∼0.01mbar). Analysis of the XPS spectra showed that the catalyst activation is associated with partial reduction of the supported platinum.
Cite:
Pakharukov I.Y.
, Prosvirin I.P.
, Chetyrin I.A.
, Bukhtiyarov V.I.
, Parmon V.N.
In situ XPS Studies of Kinetic Hysteresis in Methane Oxidation over Pt/γ-Al2O3 Catalysts
Catalysis Today. 2016. V.278. NPart 1. P.135-139. DOI: 10.1016/j.cattod.2016.05.004 WOS Scopus РИНЦ РИНЦ OpenAlex AN
In situ XPS Studies of Kinetic Hysteresis in Methane Oxidation over Pt/γ-Al2O3 Catalysts
Catalysis Today. 2016. V.278. NPart 1. P.135-139. DOI: 10.1016/j.cattod.2016.05.004 WOS Scopus РИНЦ РИНЦ OpenAlex AN
Dates:
| Submitted: | Dec 13, 2015 |
| Accepted: | May 2, 2016 |
| Published online: | May 24, 2016 |
| Published print: | Dec 1, 2016 |
Identifiers:
| ≡ Web of science: | WOS:000388053000017 |
| ≡ Scopus: | 2-s2.0-84971624331 |
| ≡ Elibrary: | 28170184 | 41766440 |
| ≡ OpenAlex: | W2406632415 |
| ≡ Chemical Abstracts: | 2016:809542 |