Films of the Pd xCe1-xO2 solid solution as a model object for the XPS study of the surface chemistry of Pd/CeO2 catalysts

R. V. Gulyaev; D. Yu Osadchii; S. V. Koscheev; A. I. Boronin

doi:10.1134/S0022476615030257

Films of the Pd _xCe_1-xO₂ solid solution as a model object for the XPS study of the surface chemistry of Pd/CeO₂ catalysts

R. V. Gulyaev, D. Yu Osadchii, S. V. Koscheev, A. I. Boronin

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The paper demonstrates a new technique for preparing nanostructured films of the Pd_xCe_1-xO_2-x-δ solid solution. The obtained films are similar to real powder catalysts by their chemical and structural properties and are conductive, which is favorable for the XPS methoda. The effect of the CO+O₂ reaction on the oxidized and reduced surfaces is studied using these model objects. The presence of the reversible "Pd_xCe_1-xO_2-x-δ 虠 surface palladium forms" transition occurring already at room temperatures in the CO+O₂ reaction is shown. Deconvolution of the O1s spectra made it possible for the first time to separate experimentally the contributions from OH^- hydroxyl and CO₃^2- carbonate surface groups.

Original language	English
Pages (from-to)	566-575
Number of pages	10
Journal	Journal of Structural Chemistry
Volume	56
Issue number	3
DOIs	https://doi.org/10.1134/S0022476615030257
Publication status	Published - 29 Jun 2015

Keywords

catalysts
ceria
deconvolution
films
low-temperature oxidation of CO
palladium
photoelectron spectroscopy
solid solution

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10.1134/S0022476615030257

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title = "Films of the Pd xCe1-xO2 solid solution as a model object for the XPS study of the surface chemistry of Pd/CeO2 catalysts",

abstract = "The paper demonstrates a new technique for preparing nanostructured films of the PdxCe1-xO2-x-δ solid solution. The obtained films are similar to real powder catalysts by their chemical and structural properties and are conductive, which is favorable for the XPS methoda. The effect of the CO+O2 reaction on the oxidized and reduced surfaces is studied using these model objects. The presence of the reversible {"}PdxCe1-xO2-x-δ 虠 surface palladium forms{"} transition occurring already at room temperatures in the CO+O2 reaction is shown. Deconvolution of the O1s spectra made it possible for the first time to separate experimentally the contributions from OH- hydroxyl and CO32- carbonate surface groups.",

keywords = "catalysts, ceria, deconvolution, films, low-temperature oxidation of CO, palladium, photoelectron spectroscopy, solid solution",

author = "Gulyaev, {R. V.} and Osadchii, {D. Yu} and Koscheev, {S. V.} and Boronin, {A. I.}",

year = "2015",

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doi = "10.1134/S0022476615030257",

language = "English",

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T1 - Films of the Pd xCe1-xO2 solid solution as a model object for the XPS study of the surface chemistry of Pd/CeO2 catalysts

AU - Gulyaev, R. V.

AU - Osadchii, D. Yu

AU - Koscheev, S. V.

AU - Boronin, A. I.

PY - 2015/6/29

Y1 - 2015/6/29

N2 - The paper demonstrates a new technique for preparing nanostructured films of the PdxCe1-xO2-x-δ solid solution. The obtained films are similar to real powder catalysts by their chemical and structural properties and are conductive, which is favorable for the XPS methoda. The effect of the CO+O2 reaction on the oxidized and reduced surfaces is studied using these model objects. The presence of the reversible "PdxCe1-xO2-x-δ 虠 surface palladium forms" transition occurring already at room temperatures in the CO+O2 reaction is shown. Deconvolution of the O1s spectra made it possible for the first time to separate experimentally the contributions from OH- hydroxyl and CO32- carbonate surface groups.

AB - The paper demonstrates a new technique for preparing nanostructured films of the PdxCe1-xO2-x-δ solid solution. The obtained films are similar to real powder catalysts by their chemical and structural properties and are conductive, which is favorable for the XPS methoda. The effect of the CO+O2 reaction on the oxidized and reduced surfaces is studied using these model objects. The presence of the reversible "PdxCe1-xO2-x-δ 虠 surface palladium forms" transition occurring already at room temperatures in the CO+O2 reaction is shown. Deconvolution of the O1s spectra made it possible for the first time to separate experimentally the contributions from OH- hydroxyl and CO32- carbonate surface groups.

KW - catalysts

KW - ceria

KW - deconvolution

KW - films

KW - low-temperature oxidation of CO

KW - palladium

KW - photoelectron spectroscopy

KW - solid solution

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DO - 10.1134/S0022476615030257

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JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

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ER -

Films of the Pd _xCe_1-xO₂ solid solution as a model object for the XPS study of the surface chemistry of Pd/CeO₂ catalysts

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Keywords

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