Promotional effect of CO2 on desulfation processes for pre-sulfated Pt-BaO/Al2O3 lean NOx trap catalysts

Do Heui Kim, Ja Hun Kwak, Janos Szanyi, Xianqin Wang, Mark H. Engelhard, Charles H.F. Peden

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3 Scopus citations


A combination of H2 TPRX, TR-XRD and XPS analysis has been used to investigate the effects of CO2 on the desulfation of pre-sulfated Pt-BaO/Al2O3 samples. The results demonstrate that the presence of CO2 promotes the removal of sulfur species, especially at temperatures below 500 °C, with a corresponding suppression of BaS formation, thus resulting in a lower amount of residual sulfur on the sample after desulfation.

Original languageEnglish (US)
Pages (from-to)1719-1722
Number of pages4
JournalTopics in Catalysis
Issue number13-20
StatePublished - Dec 2009

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


  • Desulfation
  • H TPRX
  • NOx trap
  • SO
  • TR-XRD
  • XPS


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