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Crystallography and porosity effects of CO conversion on mesoporous CeO2

Lundberg, Mats LU ; Skårman, Björn LU and Wallenberg, Reine LU (2004) In Microporous and Mesoporous Materials 69(3). p.187-195
Abstract
Catalytic properties and thermal stability were studied for samples of mesoporous ceria with different BET specific surface area. The catalytic conversion of carbon monoxide to carbon dioxide and how thermal treatments of the catalysts influence the catalytic properties have been investigated. The materials were studied by transmission electron microscopy and by conversion profile measurements of CO versus temperature using a plug flow micro reactor made in quartz glass only. In order to compare the catalytic properties associated with a specific structure or morphology directly, aliquots of surface area (0.6 m(2)) of the catalyst was used. Scanning electron microscopy and X-ray energy-dispersive spectrometry (XEDS) were used for surface... (More)
Catalytic properties and thermal stability were studied for samples of mesoporous ceria with different BET specific surface area. The catalytic conversion of carbon monoxide to carbon dioxide and how thermal treatments of the catalysts influence the catalytic properties have been investigated. The materials were studied by transmission electron microscopy and by conversion profile measurements of CO versus temperature using a plug flow micro reactor made in quartz glass only. In order to compare the catalytic properties associated with a specific structure or morphology directly, aliquots of surface area (0.6 m(2)) of the catalyst was used. Scanning electron microscopy and X-ray energy-dispersive spectrometry (XEDS) were used for surface morphology studies and elemental analysis. It was found that the proportion of {100} surfaces determine the catalytic properties of the material and these surfaces become important at calcination temperatures between 773 and 973 K. The internal mesoporous structure is destroyed at calcination temperatures around 873 K. (C) 2004 Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cerium dioxide, Catalysis, CO, Oxidation, Electron microscopy
in
Microporous and Mesoporous Materials
volume
69
issue
3
pages
187 - 195
publisher
Elsevier
external identifiers
  • wos:000220946800006
  • scopus:1842509202
ISSN
1387-1811
DOI
10.1016/j.micromeso.2004.02.009
language
English
LU publication?
yes
id
b52b6229-d3ce-4ca0-806d-9e7d4096282b (old id 140920)
date added to LUP
2007-07-13 14:25:19
date last changed
2017-08-20 04:29:21
@article{b52b6229-d3ce-4ca0-806d-9e7d4096282b,
  abstract     = {Catalytic properties and thermal stability were studied for samples of mesoporous ceria with different BET specific surface area. The catalytic conversion of carbon monoxide to carbon dioxide and how thermal treatments of the catalysts influence the catalytic properties have been investigated. The materials were studied by transmission electron microscopy and by conversion profile measurements of CO versus temperature using a plug flow micro reactor made in quartz glass only. In order to compare the catalytic properties associated with a specific structure or morphology directly, aliquots of surface area (0.6 m(2)) of the catalyst was used. Scanning electron microscopy and X-ray energy-dispersive spectrometry (XEDS) were used for surface morphology studies and elemental analysis. It was found that the proportion of {100} surfaces determine the catalytic properties of the material and these surfaces become important at calcination temperatures between 773 and 973 K. The internal mesoporous structure is destroyed at calcination temperatures around 873 K. (C) 2004 Elsevier Inc. All rights reserved.},
  author       = {Lundberg, Mats and Skårman, Björn and Wallenberg, Reine},
  issn         = {1387-1811},
  keyword      = {Cerium dioxide,Catalysis,CO,Oxidation,Electron microscopy},
  language     = {eng},
  number       = {3},
  pages        = {187--195},
  publisher    = {Elsevier},
  series       = {Microporous and Mesoporous Materials},
  title        = {Crystallography and porosity effects of CO conversion on mesoporous CeO2},
  url          = {http://dx.doi.org/10.1016/j.micromeso.2004.02.009},
  volume       = {69},
  year         = {2004},
}