Selective reduction of NOx by propene over Au/γ-Al2O3 catalysts

M. C. Kung; J. H. Lee; A. Chu-Kung; H. H. Kung

doi:10.1016/s0167-2991(96)80281-3

Selective reduction of NO_x by propene over Au/γ-Al₂O₃ catalysts

M. C. Kung, J. H. Lee, A. Chu-Kung, H. H. Kung^*

^*Corresponding author for this work

Chemical and Biological Engineering

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

38 Scopus citations

Abstract

The activity of Au/γ-Al₂O₃ catalysts for NO reduction by propene was studied in the presence of 1.5 % H₂O and 4.7 % O₂. The behavior of the catalysts prepared using different procedure could be classified into three groups. Group A catalysts were active in N₂ production below 673 K. They contained aggregates of small grains of Au. Group B catalysts were active above 673 K. They contained large Au crystallites. On these catalysts, the Al₂O₃ support contributed substantially to the observed catalytic activity. Group C catalysts were not very active for N₂ production, but were the most active for propene combustion. They contained small grains of Au highly dispersed on Al₂O₃. It was established that the oxidation of NO to NO₂ was not important in NO reduction over catalysts effective for N₂ formation.

Original language	English (US)
Pages (from-to)	701-710
Number of pages	10
Journal	Studies in Surface Science and Catalysis
Volume	101 A
DOIs	https://doi.org/10.1016/s0167-2991(96)80281-3
State	Published - 1996

Funding

This work was supportebdy the U.S. DOE, BasicE nergyS cienceC, hemicaSl ciencesa, nd GM CorporationT. heNOx analyzewr asd onatedb y Ford Motor Companya, ndRika Suzuki and Jason Brooks contributetdo the preparatioonf catalysts.

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/s0167-2991(96)80281-3

Cite this

@article{ed2a73f9012e4282a6a2c50ca401fa81,

title = "Selective reduction of NOx by propene over Au/γ-Al2O3 catalysts",

abstract = "The activity of Au/γ-Al2O3 catalysts for NO reduction by propene was studied in the presence of 1.5 % H2O and 4.7 % O2. The behavior of the catalysts prepared using different procedure could be classified into three groups. Group A catalysts were active in N2 production below 673 K. They contained aggregates of small grains of Au. Group B catalysts were active above 673 K. They contained large Au crystallites. On these catalysts, the Al2O3 support contributed substantially to the observed catalytic activity. Group C catalysts were not very active for N2 production, but were the most active for propene combustion. They contained small grains of Au highly dispersed on Al2O3. It was established that the oxidation of NO to NO2 was not important in NO reduction over catalysts effective for N2 formation.",

author = "Kung, {M. C.} and Lee, {J. H.} and A. Chu-Kung and Kung, {H. H.}",

note = "Funding Information: This work was supportebdy the U.S. DOE, BasicE nergyS cienceC, hemicaSl ciencesa, nd GM CorporationT. heNOx analyzewr asd onatedb y Ford Motor Companya, ndRika Suzuki and Jason Brooks contributetdo the preparatioonf catalysts.",

year = "1996",

doi = "10.1016/s0167-2991(96)80281-3",

language = "English (US)",

volume = "101 A",

pages = "701--710",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Selective reduction of NOx by propene over Au/γ-Al2O3 catalysts

AU - Kung, M. C.

AU - Lee, J. H.

AU - Chu-Kung, A.

AU - Kung, H. H.

N1 - Funding Information: This work was supportebdy the U.S. DOE, BasicE nergyS cienceC, hemicaSl ciencesa, nd GM CorporationT. heNOx analyzewr asd onatedb y Ford Motor Companya, ndRika Suzuki and Jason Brooks contributetdo the preparatioonf catalysts.

PY - 1996

Y1 - 1996

N2 - The activity of Au/γ-Al2O3 catalysts for NO reduction by propene was studied in the presence of 1.5 % H2O and 4.7 % O2. The behavior of the catalysts prepared using different procedure could be classified into three groups. Group A catalysts were active in N2 production below 673 K. They contained aggregates of small grains of Au. Group B catalysts were active above 673 K. They contained large Au crystallites. On these catalysts, the Al2O3 support contributed substantially to the observed catalytic activity. Group C catalysts were not very active for N2 production, but were the most active for propene combustion. They contained small grains of Au highly dispersed on Al2O3. It was established that the oxidation of NO to NO2 was not important in NO reduction over catalysts effective for N2 formation.

AB - The activity of Au/γ-Al2O3 catalysts for NO reduction by propene was studied in the presence of 1.5 % H2O and 4.7 % O2. The behavior of the catalysts prepared using different procedure could be classified into three groups. Group A catalysts were active in N2 production below 673 K. They contained aggregates of small grains of Au. Group B catalysts were active above 673 K. They contained large Au crystallites. On these catalysts, the Al2O3 support contributed substantially to the observed catalytic activity. Group C catalysts were not very active for N2 production, but were the most active for propene combustion. They contained small grains of Au highly dispersed on Al2O3. It was established that the oxidation of NO to NO2 was not important in NO reduction over catalysts effective for N2 formation.

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U2 - 10.1016/s0167-2991(96)80281-3

DO - 10.1016/s0167-2991(96)80281-3

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VL - 101 A

SP - 701

EP - 710

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

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