Sulfur tolerant vehicle systems academic research

Julie L. D'Itri; D. H. Kim; Mayfair Kung; Harold H Kung; Donggeun Ko; Paul Maggard; Jason Pless; Kenneth Poeppelmeier; R. M. Ferrizz; R. J. Gorte; J. M. Vohs

Sulfur tolerant vehicle systems academic research

Julie L. D'Itri^*, D. H. Kim, Mayfair Kung, Harold H Kung, Donggeun Ko, Paul Maggard, Jason Pless, Kenneth Poeppelmeier, R. M. Ferrizz, R. J. Gorte, J. M. Vohs

^*Corresponding author for this work

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

Abstract

There is a need to develop sulfur tolerant materials that are appropriate for three-way catalysis. In light of this, a study on the effect of SO₂ on the structural, morphological, and catalytic properties of metal free CeO₂ and Ce_0.75Zr_0.25O₂ oxides was carried out. Both CeO₂ and Ce_0.75Zr_0.25O₂ were susceptible to crystalline grain size growth and surface area loss when exposed to gaseous mixtures containing 20-40 ppm SO₂ at 600°C. The CO disproportionation reaction occurred on CeO₂ and Ce_0.75Zr_0.25O₂, as well as on the Pd metal surface. This reaction led to the deposition of carbon on the surface of the materials and the formation of gaseous CO₂. Surface superoxides were highly reactive toward gaseous ethylene, while adsorbed peroxides were spectator species. The chemical inertness of the surface peroxides in hydrocarbon oxidation reactions originated from its resistance toward O-O bond dissociation.

Original language	English (US)
Journal	CRC Reports
Issue number	637
State	Published - Dec 1 2004

ASJC Scopus subject areas

Energy(all)

Cite this

@article{a96fdff47ca14e16850aa4123eb9470d,

title = "Sulfur tolerant vehicle systems academic research",

abstract = "There is a need to develop sulfur tolerant materials that are appropriate for three-way catalysis. In light of this, a study on the effect of SO2 on the structural, morphological, and catalytic properties of metal free CeO2 and Ce0.75Zr0.25O2 oxides was carried out. Both CeO2 and Ce0.75Zr0.25O2 were susceptible to crystalline grain size growth and surface area loss when exposed to gaseous mixtures containing 20-40 ppm SO2 at 600°C. The CO disproportionation reaction occurred on CeO2 and Ce0.75Zr0.25O2, as well as on the Pd metal surface. This reaction led to the deposition of carbon on the surface of the materials and the formation of gaseous CO2. Surface superoxides were highly reactive toward gaseous ethylene, while adsorbed peroxides were spectator species. The chemical inertness of the surface peroxides in hydrocarbon oxidation reactions originated from its resistance toward O-O bond dissociation.",

author = "D'Itri, {Julie L.} and Kim, {D. H.} and Mayfair Kung and Kung, {Harold H} and Donggeun Ko and Paul Maggard and Jason Pless and Kenneth Poeppelmeier and Ferrizz, {R. M.} and Gorte, {R. J.} and Vohs, {J. M.}",

year = "2004",

month = dec,

day = "1",

language = "English (US)",

journal = "CRC Reports",

number = "637",

}

TY - JOUR

T1 - Sulfur tolerant vehicle systems academic research

AU - D'Itri, Julie L.

AU - Kim, D. H.

AU - Kung, Mayfair

AU - Kung, Harold H

AU - Ko, Donggeun

AU - Maggard, Paul

AU - Pless, Jason

AU - Poeppelmeier, Kenneth

AU - Ferrizz, R. M.

AU - Gorte, R. J.

AU - Vohs, J. M.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - There is a need to develop sulfur tolerant materials that are appropriate for three-way catalysis. In light of this, a study on the effect of SO2 on the structural, morphological, and catalytic properties of metal free CeO2 and Ce0.75Zr0.25O2 oxides was carried out. Both CeO2 and Ce0.75Zr0.25O2 were susceptible to crystalline grain size growth and surface area loss when exposed to gaseous mixtures containing 20-40 ppm SO2 at 600°C. The CO disproportionation reaction occurred on CeO2 and Ce0.75Zr0.25O2, as well as on the Pd metal surface. This reaction led to the deposition of carbon on the surface of the materials and the formation of gaseous CO2. Surface superoxides were highly reactive toward gaseous ethylene, while adsorbed peroxides were spectator species. The chemical inertness of the surface peroxides in hydrocarbon oxidation reactions originated from its resistance toward O-O bond dissociation.

AB - There is a need to develop sulfur tolerant materials that are appropriate for three-way catalysis. In light of this, a study on the effect of SO2 on the structural, morphological, and catalytic properties of metal free CeO2 and Ce0.75Zr0.25O2 oxides was carried out. Both CeO2 and Ce0.75Zr0.25O2 were susceptible to crystalline grain size growth and surface area loss when exposed to gaseous mixtures containing 20-40 ppm SO2 at 600°C. The CO disproportionation reaction occurred on CeO2 and Ce0.75Zr0.25O2, as well as on the Pd metal surface. This reaction led to the deposition of carbon on the surface of the materials and the formation of gaseous CO2. Surface superoxides were highly reactive toward gaseous ethylene, while adsorbed peroxides were spectator species. The chemical inertness of the surface peroxides in hydrocarbon oxidation reactions originated from its resistance toward O-O bond dissociation.

UR - http://www.scopus.com/inward/record.url?scp=53249119665&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=53249119665&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:53249119665

JO - CRC Reports

JF - CRC Reports

IS - 637

ER -

Sulfur tolerant vehicle systems academic research

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this