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Title: The surface chemistry of cerium oxide

Abstract

Our review covers the structure of, and chemical reactions on, well-defined cerium oxide surfaces. Ceria, or mixed oxides containing ceria, are critical components in automotive three-way catalysts due to their well-known oxygen storage capacity. Ceria is also emerging as an important material in a number of other catalytic processes, particularly those involving organic oxygenates and the water–gas shift reaction. Ceria's acid–base properties, and thus its catalytic behavior, are closely related to its surface structure where different oxygen anion and cerium cation environments are present on the low-index structural faces. The actual structure of these various faces has been the focus of a number of theoretical and experimental investigations. Ceria is also easily reducible from CeO 2 to CeO 2-X. The presence of oxygen vacancies on the surface often dramatically alters the adsorption and subsequent reactions of various adsorbates, either on a clean surface or on metal particles supported on the surface. We conducted surface science studies on the surfaces of thin-films rather than on the surfaces of bulk single crystal oxides. The growth, characterization and properties of these thin-films are also examined.

Authors:
 [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1185722
Alternate Identifier(s):
OSTI ID: 1365421
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Surface Science Reports
Additional Journal Information:
Journal Volume: 70; Journal Issue: 1; Journal ID: ISSN 0167-5729
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ceria; thin films; scanning tunneling microscopy; temperature programmed desorption; photoelectron spectroscopy; chemisorption

Citation Formats

Mullins, David R. The surface chemistry of cerium oxide. United States: N. p., 2015. Web. doi:10.1016/j.surfrep.2014.12.001.
Mullins, David R. The surface chemistry of cerium oxide. United States. doi:10.1016/j.surfrep.2014.12.001.
Mullins, David R. Thu . "The surface chemistry of cerium oxide". United States. doi:10.1016/j.surfrep.2014.12.001. https://www.osti.gov/servlets/purl/1185722.
@article{osti_1185722,
title = {The surface chemistry of cerium oxide},
author = {Mullins, David R.},
abstractNote = {Our review covers the structure of, and chemical reactions on, well-defined cerium oxide surfaces. Ceria, or mixed oxides containing ceria, are critical components in automotive three-way catalysts due to their well-known oxygen storage capacity. Ceria is also emerging as an important material in a number of other catalytic processes, particularly those involving organic oxygenates and the water–gas shift reaction. Ceria's acid–base properties, and thus its catalytic behavior, are closely related to its surface structure where different oxygen anion and cerium cation environments are present on the low-index structural faces. The actual structure of these various faces has been the focus of a number of theoretical and experimental investigations. Ceria is also easily reducible from CeO2 to CeO2-X. The presence of oxygen vacancies on the surface often dramatically alters the adsorption and subsequent reactions of various adsorbates, either on a clean surface or on metal particles supported on the surface. We conducted surface science studies on the surfaces of thin-films rather than on the surfaces of bulk single crystal oxides. The growth, characterization and properties of these thin-films are also examined.},
doi = {10.1016/j.surfrep.2014.12.001},
journal = {Surface Science Reports},
number = 1,
volume = 70,
place = {United States},
year = {Thu Jan 29 00:00:00 EST 2015},
month = {Thu Jan 29 00:00:00 EST 2015}
}

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Cited by: 110 works
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