Nanostructured, Gd-Doped Ceria Promoted by Pt or Pd: Investigation of the Electronic and Surface Structures and Relations to Chemical Properties Научная публикация
Журнал |
The Journal of Physical Chemistry B
ISSN: 1520-6106 , E-ISSN: 1520-5207 |
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Вых. Данные | Год: 2005, Том: 109, Номер: 43, Страницы: 20077-20086 Страниц : 10 DOI: 10.1021/jp051525m | ||||
Ключевые слова | Catalysis; Doping (additives); Gadolinium compounds; Nanostructured materials; Oxidation; Rare earth elements; Transmission electron microscopy; X ray diffraction analysis | ||||
Авторы |
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Организации |
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Информация о финансировании (5)
1 | Президиум РАН | 39 |
2 | North Atlantic Treaty Organization | SfP-980878 |
3 | Международный научно-технический центр | 2529 |
4 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 01-2162 |
5 | German Academic Exchange Service |
Реферат:
Nanostructured ceria doped with other rare earth elements is a good oxygen ion conductor, which gives rise to various catalytic applications such as the construction of membranes for syngas production by partial oxidation of methane. This article focuses on the Gd-doped cerium dioxides, which can be modified with Pt or Pd to enhance the reactivity of the lattice oxygen in interaction with methane. The aim of the work is the elucidation of correlations between the structural, electronic, and chemical properties of these nanomaterials. Detailed studies were performed for a series of samples with and without surface modification by noble metals using a complex combination of physicochemical methods: XRD, TEM, CH4 TPR, XPS, SIMS, and FTIR spectroscopy of adsorbed CO. XPS and TPR data revealed that surface modification with noble metals enhances the reducibility of the doped ceria support, where the effect is more pronounced for Pd than for Pt. The formation of highly cationic Pd species due to strong metal support interactions provides a possible explanation for this behavior. Furthermore, the results obtained in the present work for the Gd-doped ceria system are compared to those obtained previously for the Pr-doped ceria system.
Библиографическая ссылка:
Borchert H.
, Borchert Y.
, Kaichev V.V.
, Prosvirin I.P.
, Alikina G.M.
, Lukashevich A.I.
, Zaikovskii V.I.
, Moroz E.M.
, Paukshtis E.A.
, Bukhtiyarov V.I.
, Sadykov V.A.
Nanostructured, Gd-Doped Ceria Promoted by Pt or Pd: Investigation of the Electronic and Surface Structures and Relations to Chemical Properties
The Journal of Physical Chemistry B. 2005. V.109. N43. P.20077-20086. DOI: 10.1021/jp051525m WOS Scopus РИНЦ
Nanostructured, Gd-Doped Ceria Promoted by Pt or Pd: Investigation of the Electronic and Surface Structures and Relations to Chemical Properties
The Journal of Physical Chemistry B. 2005. V.109. N43. P.20077-20086. DOI: 10.1021/jp051525m WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 24 мар. 2005 г. |
Принята к публикации: | 29 авг. 2005 г. |
Опубликована online: | 12 окт. 2005 г. |
Опубликована в печати: | 1 нояб. 2005 г. |
Идентификаторы БД:
Web of science | WOS:000232959800007 |
Scopus | 2-s2.0-27744519596 |
РИНЦ | 13492675 |
Chemical Abstracts | 2005:1090294 |
Chemical Abstracts (print) | 143:462759 |
PMID (PubMed) | 16853596 |
OpenAlex | W2024215510 |