Reactivation of sintered Pt/Al2O3 oxidation catalysts

F C Galisteo, R Mariscal, M L Granados, J L G Fierro, R A Daley, J A Anderson

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The reactivation of thermally sintered Pt/Al2O3 catalysts used in the simultaneous oxidation of CO and propene has been achieved by an oxychlorination treatment. The catalyst can be considered to model the active component of the catalytic converter fitted to diesel driven cars. Platinum crystallites redispersion was verified by XRD, H-2 chemisorption, TEM and FTIR. The extent of regeneration reflects the platinum particle redispersion achieved by such a treatment. Oxychlorination also introduced electronic effects in the Pt particle caused by the presence of chlorine at the Pt-Al2O3 interface but no detrimental result of this was observed in the oxidation reactions. The results indicate that the deactivation of the diesel oxidation catalysts (DOCs) can be reverted by this simple treatment resulting in a remarkable recovery of the catalytic activity. (c) 2005 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalApplied Catalysis B: Environmental
Volume59
Issue number3-4
Early online date19 Mar 2005
DOIs
Publication statusPublished - 8 Aug 2005

Fingerprint

reactivation
catalyst
Platinum
platinum
oxidation
Oxidation
Catalysts
diesel
Catalytic converters
Chlorine
Carbon Monoxide
Chemisorption
Crystallites
Propylene
transmission electron microscopy
chlorine
automobile
Catalyst activity
Railroad cars
regeneration

Keywords

  • diesel oxidation catalyst
  • sintering
  • platinum
  • reactivation
  • oxychlorination
  • treated PT-GAMMA-AL2O3 catalysts
  • supported platinum catalysts
  • adsorption
  • deactivation
  • redispersion
  • temperature
  • dispersion
  • reduction
  • alumina
  • surface

Cite this

Galisteo, F. C., Mariscal, R., Granados, M. L., Fierro, J. L. G., Daley, R. A., & Anderson, J. A. (2005). Reactivation of sintered Pt/Al2O3 oxidation catalysts. Applied Catalysis B: Environmental, 59(3-4), 227-233. https://doi.org/10.1016/j.apcatb.2005.02.004

Reactivation of sintered Pt/Al2O3 oxidation catalysts. / Galisteo, F C ; Mariscal, R ; Granados, M L ; Fierro, J L G ; Daley, R A ; Anderson, J A .

In: Applied Catalysis B: Environmental, Vol. 59, No. 3-4, 08.08.2005, p. 227-233.

Research output: Contribution to journalArticle

Galisteo, FC, Mariscal, R, Granados, ML, Fierro, JLG, Daley, RA & Anderson, JA 2005, 'Reactivation of sintered Pt/Al2O3 oxidation catalysts', Applied Catalysis B: Environmental, vol. 59, no. 3-4, pp. 227-233. https://doi.org/10.1016/j.apcatb.2005.02.004
Galisteo FC, Mariscal R, Granados ML, Fierro JLG, Daley RA, Anderson JA. Reactivation of sintered Pt/Al2O3 oxidation catalysts. Applied Catalysis B: Environmental. 2005 Aug 8;59(3-4):227-233. https://doi.org/10.1016/j.apcatb.2005.02.004
Galisteo, F C ; Mariscal, R ; Granados, M L ; Fierro, J L G ; Daley, R A ; Anderson, J A . / Reactivation of sintered Pt/Al2O3 oxidation catalysts. In: Applied Catalysis B: Environmental. 2005 ; Vol. 59, No. 3-4. pp. 227-233.
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