Participation of Surface Oxygen in the Stabilization of the Rh/HOPG System with Respect to NO2 Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
||
|---|---|---|---|
| Output data | Year: 2024, Volume: 65, Number: 1, Pages: 75-83 Pages count : 9 DOI: 10.1134/s0023158424010063 | ||
| Tags | rhodium, highly oriented pyrolytic graphite (HOPG), NO2, X-ray photoelectron spectroscopy (XPS) | ||
| Authors |
|
||
| Affiliations |
|
Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2024-2028 |
Abstract:
In this work, we used X-ray photoelectron spectroscopy (XPS) to perform a comparative study of the interaction of NO2 with two samples of highly oriented pyrolytic graphite (HOPG), on the surfaces of which rhodium was preliminarily deposited by evaporation in a vacuum, at room temperature and a pressure of 10–5 mbar. Before metal deposition, one of the HOPG samples was annealed in a vacuum at 600°C, and the other was bombarded with argon ions followed by exposure to air at room temperature for 1 h in order to introduce strongly bound oxygen atoms into the surface composition. After the deposition of rhodium onto the two HOPG samples, two model catalysts designated as Rh/C and Rh/C(A)–O were prepared. It was found that the interaction of NO2 with Rh/C led to the oxidation of graphite with the destruction of the sur face layer. The Rh particles remained in a metallic state, but they were introduced into the near-surface layer of the carbon support. On the contrary, when the Rh/C(A)–O sample was treated with NO2, the deposited rhodium was partially converted into Rh2O3, while the graphite was oxidized to an insignificant degree and retained its original structure. The role of surface oxygen in the stabilization of graphite with respect to oxi dation in NO2 was discussed
Cite:
Smirnov M.Y.
, Kalinkin A.V.
, Bukhtiyarov V.I.
Participation of Surface Oxygen in the Stabilization of the Rh/HOPG System with Respect to NO2
Kinetics and Catalysis. 2024. V.65. N1. P.75-83. DOI: 10.1134/s0023158424010063 WOS Scopus РИНЦ AN OpenAlex
Participation of Surface Oxygen in the Stabilization of the Rh/HOPG System with Respect to NO2
Kinetics and Catalysis. 2024. V.65. N1. P.75-83. DOI: 10.1134/s0023158424010063 WOS Scopus РИНЦ AN OpenAlex
Original:
Смирнов М.Ю.
, Калинкин А.В.
, Бухтияров В.И.
Участие поверхностного кислорода в стабилизации системы Rh/ВОПГ по отношению к NO2
Кинетика и катализ. 2024. Т.65. №1. С.87-97. DOI: 10.31857/S0453881124010089 РИНЦ OpenAlex
Участие поверхностного кислорода в стабилизации системы Rh/ВОПГ по отношению к NO2
Кинетика и катализ. 2024. Т.65. №1. С.87-97. DOI: 10.31857/S0453881124010089 РИНЦ OpenAlex
Dates:
| Published online: | Apr 27, 2023 |
| Submitted: | Sep 18, 2023 |
| Published print: | Feb 1, 2024 |
| Accepted: | Oct 5, 2024 |
Identifiers:
| Web of science: | WOS:001210717700008 |
| Scopus: | 2-s2.0-85191657773 |
| Elibrary: | 67308023 |
| Chemical Abstracts: | 2024:924980 |
| OpenAlex: | W4395698267 |