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

doi:10.1007/s11244-009-9328-8

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

Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	1719-1722
Number of pages	4
Journal	Topics in Catalysis
Volume	52
Issue number	13-20
DOIs	https://doi.org/10.1007/s11244-009-9328-8
State	Published - Dec 2009

All Science Journal Classification (ASJC) codes

Catalysis
General Chemistry

Keywords

Desulfation
H TPRX
NOx trap
SO
TR-XRD
XPS

Access to Document

10.1007/s11244-009-9328-8

Cite this

@article{76f5639b28a448209f1450e686ceb372,

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

abstract = "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.",

keywords = "Desulfation, H TPRX, NOx trap, SO, TR-XRD, XPS",

author = "Kim, \{Do Heui\} and Kwak, \{Ja Hun\} and Janos Szanyi and Xianqin Wang and Engelhard, \{Mark H.\} and Peden, \{Charles H.F.\}",

note = "Funding Information: Acknowledgement Use of the NSLS at Brookhaven National Laboratory (BNL) was supported by the U.S. Department of Energy (DOE), Office of Science/Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. Financial support was provided by the U.S. DOE, Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program. Many of the experiments were performed in the Environmental Molecular Sciences Laboratory (EMSL) at Pacific Northwest National Laboratory (PNNL). The EMSL is a national scientific user facility supported by the U.S. DOE, Office of Science/ Biological and Environmental Research. PNNL is a multi-program national laboratory operated for the U.S. DOE by Battelle Memorial Institute under Contract DE-AC06-76RLO 1830.",

year = "2009",

month = dec,

doi = "10.1007/s11244-009-9328-8",

language = "English (US)",

volume = "52",

pages = "1719--1722",

journal = "Topics in Catalysis",

issn = "1022-5528",

publisher = "Springer",

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}

TY - JOUR

T1 - Promotional effect of CO2 on desulfation processes for pre-sulfated Pt-BaO/Al2O3 lean NOx trap catalysts

AU - Kim, Do Heui

AU - Kwak, Ja Hun

AU - Szanyi, Janos

AU - Wang, Xianqin

AU - Engelhard, Mark H.

AU - Peden, Charles H.F.

N1 - Funding Information: Acknowledgement Use of the NSLS at Brookhaven National Laboratory (BNL) was supported by the U.S. Department of Energy (DOE), Office of Science/Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. Financial support was provided by the U.S. DOE, Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program. Many of the experiments were performed in the Environmental Molecular Sciences Laboratory (EMSL) at Pacific Northwest National Laboratory (PNNL). The EMSL is a national scientific user facility supported by the U.S. DOE, Office of Science/ Biological and Environmental Research. PNNL is a multi-program national laboratory operated for the U.S. DOE by Battelle Memorial Institute under Contract DE-AC06-76RLO 1830.

PY - 2009/12

Y1 - 2009/12

N2 - 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.

AB - 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.

KW - Desulfation

KW - H TPRX

KW - NOx trap

KW - SO

KW - TR-XRD

KW - XPS

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DO - 10.1007/s11244-009-9328-8

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SP - 1719

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