Nanostructured, Gd-Doped Ceria Promoted by Pt or Pd: Investigation of the Electronic and Surface Structures and Relations to Chemical Properties Full article
Journal |
The Journal of Physical Chemistry B
ISSN: 1520-6106 , E-ISSN: 1520-5207 |
||||
---|---|---|---|---|---|
Output data | Year: 2005, Volume: 109, Number: 43, Pages: 20077-20086 Pages count : 10 DOI: 10.1021/jp051525m | ||||
Tags | Catalysis; Doping (additives); Gadolinium compounds; Nanostructured materials; Oxidation; Rare earth elements; Transmission electron microscopy; X ray diffraction analysis | ||||
Authors |
|
||||
Affiliations |
|
Funding (5)
1 | Президиум РАН | 39 |
2 | North Atlantic Treaty Organization | SfP-980878 |
3 | International Science and Technology Center | 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 |
Abstract:
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.
Cite:
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
Dates:
Submitted: | Mar 24, 2005 |
Accepted: | Aug 29, 2005 |
Published online: | Oct 12, 2005 |
Published print: | Nov 1, 2005 |
Identifiers:
Web of science | WOS:000232959800007 |
Scopus | 2-s2.0-27744519596 |
Elibrary | 13492675 |
Chemical Abstracts | 2005:1090294 |
Chemical Abstracts (print) | 143:462759 |
PMID | 16853596 |
OpenAlex | W2024215510 |