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Kwak, Ja Hun
Molecular Catalysis lab
Research Interests
  • Heterogeneous catalysis, molecular catalysis, ASlumima, zeolites

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Promotional Effect of CO2 on Desulfation Processes for Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts

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Title
Promotional Effect of CO2 on Desulfation Processes for Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts
Author
Kim, Do HeuiKwak, JahunSzanyi, JanosWang, XianqinEngelhard, Mark H.Peden, Charles H.F.
Keywords
NOx trap; SO2; Desulfation; H-2 TPRX; TR-XRD; XPS
Issue Date
2009-07
Publisher
SPRINGER/PLENUM PUBLISHERS
Citation
TOPICS IN CATALYSIS, v.52, no.13-20, pp.1719 - 1722
Abstract
A combination of H-2 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 degrees C, with a corresponding suppression of BaS formation, thus resulting in a lower amount of residual sulfur on the sample after desulfation.
URI
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DOI
10.1007/s11244-009-9328-8
ISSN
1022-5528
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ECHE_Journal Papers
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