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Stabilization and Regeneration of CeO2 and CeO2/ZrO2 based Pt catalyst for the water gas shift reaction

Häggblad, Robert LU ; Hulteberg, Christian LU and Brandin, Jan LU (2005) Com2005 / First Internationell Symposium on Fuel Cell and Hydrogen Technology In Com2005 Fuel Cell and Hydrogen Technologies. p.641-655
Abstract
The article deals with stabilisation and regeneration of CeO2 and CeO2/ZrO2 based Pt water gas shift catalysts, subject to high initial deactivation. The reaction gas species effect on the catalyst deactivation was investigated by H2-TPR. Activity measurements enabled the effect of different promoters, some added to the CeO2 based catalysts and some to the CeO2/ZrO2 based Pt catalysts, to be investigated. The catalysts were also characterised by BET and CO-TPR. Deactivated catalysts activity was restored by using various regeneration methods. Of the two selected carriers the CeO2/ZrO2 based Pt catalyst showed the highest resilience to deactivation. For the two different carriers, CeO2 and CeO2/ZrO2, W and Re were the best promoters when... (More)
The article deals with stabilisation and regeneration of CeO2 and CeO2/ZrO2 based Pt water gas shift catalysts, subject to high initial deactivation. The reaction gas species effect on the catalyst deactivation was investigated by H2-TPR. Activity measurements enabled the effect of different promoters, some added to the CeO2 based catalysts and some to the CeO2/ZrO2 based Pt catalysts, to be investigated. The catalysts were also characterised by BET and CO-TPR. Deactivated catalysts activity was restored by using various regeneration methods. Of the two selected carriers the CeO2/ZrO2 based Pt catalyst showed the highest resilience to deactivation. For the two different carriers, CeO2 and CeO2/ZrO2, W and Re were the best promoters when the catalyst was subject to deactivation. Experiments with H2-TPR indicate a fast initial change in the platinum oxides concentration and composition. The CO-TPR was used to make conclusions about the various regeneration effects of water and oxygen on the catalyst. Finally it is suggested that not one deactivation mechanism is possible and which mechanism that dominates is dependant on the catalyst and the reaction gas composition. (Less)
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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
ceria ziriconia platinum WGS water gas shift catalyst deactivation stabilization regeneration CeO2 CeO2-ZrO2 Pt
in
Com2005
editor
Ghosh, Dave
volume
Fuel Cell and Hydrogen Technologies
pages
14 pages
publisher
Canadian institute of mining, metallurgy and petroleum /MetSoc
conference name
Com2005 / First Internationell Symposium on Fuel Cell and Hydrogen Technology
ISBN
1-894475-61-5
language
English
LU publication?
no
id
88980d48-7a46-41be-a51d-b80564700924 (old id 1612450)
date added to LUP
2010-06-09 12:05:31
date last changed
2016-06-29 09:07:14
@misc{88980d48-7a46-41be-a51d-b80564700924,
  abstract     = {The article deals with stabilisation and regeneration of CeO2 and CeO2/ZrO2 based Pt water gas shift catalysts, subject to high initial deactivation. The reaction gas species effect on the catalyst deactivation was investigated by H2-TPR. Activity measurements enabled the effect of different promoters, some added to the CeO2 based catalysts and some to the CeO2/ZrO2 based Pt catalysts, to be investigated. The catalysts were also characterised by BET and CO-TPR. Deactivated catalysts activity was restored by using various regeneration methods. Of the two selected carriers the CeO2/ZrO2 based Pt catalyst showed the highest resilience to deactivation. For the two different carriers, CeO2 and CeO2/ZrO2, W and Re were the best promoters when the catalyst was subject to deactivation. Experiments with H2-TPR indicate a fast initial change in the platinum oxides concentration and composition. The CO-TPR was used to make conclusions about the various regeneration effects of water and oxygen on the catalyst. Finally it is suggested that not one deactivation mechanism is possible and which mechanism that dominates is dependant on the catalyst and the reaction gas composition.},
  author       = {Häggblad, Robert and Hulteberg, Christian and Brandin, Jan},
  editor       = {Ghosh, Dave},
  isbn         = {1-894475-61-5},
  keyword      = {ceria ziriconia platinum WGS water gas shift catalyst deactivation stabilization regeneration CeO2 CeO2-ZrO2 Pt},
  language     = {eng},
  pages        = {641--655},
  publisher    = {ARRAY(0xb6abe18)},
  series       = {Com2005},
  title        = {Stabilization and Regeneration of CeO2 and CeO2/ZrO2 based Pt catalyst for the water gas shift reaction},
  volume       = {Fuel Cell and Hydrogen Technologies},
  year         = {2005},
}