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

Journal Article · Tue Dec 01 04:00:00 EST 2009 · Topics in Catalysis, 52(13-20):1719-1722

DOI:https://doi.org/10.1007/s11244-009-9328-8· OSTI ID:972954

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

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.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 972954
• Report Number(s): PNNL-SA-64161; 19800; VT0401000
• Journal Information: Topics in Catalysis, 52(13-20):1719-1722, Journal Name: Topics in Catalysis, 52(13-20):1719-1722 Journal Issue: 13-20 Vol. 52
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BARIUM OXIDES
CARBON DIOXIDE
CATALYSTS
CATALYTIC EFFECTS
DESULFURIZATION
Environmental Molecular Sciences Laboratory
NITROGEN OXIDES
PLATINUM
PROMOTERS
REMOVAL