Activity of SiO2 supported gold-palladium catalysts in CO oxidation

A. M. Venezia, L. F. Liotta, G. Pantaleo, V. La Parola, G. Deganello, A. Beck, Z. Koppány, K. Frey, D. Horváth, L. Guczi

Research output: Contribution to journalArticle

149 Citations (Scopus)

Abstract

Bimetallic Au-Pd catalysts supported on silica with different Au/Pd atomic ratios were prepared by simultaneous reduction of palladium and gold precursors by ethanol in the presence of the polymer, polyvinylpyrrolidone (PVP). Formation of alloyed particles was detected by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and CO chemisorption measurements. The catalysts were tested in the catalytic oxidation of CO using a plug-flow reactor. The CO conversion was determined as a function of temperature. The monometallic palladium and the palladium-rich catalysts behaved quite similarly and were the most active catalysts. A drastic reduction of the CO oxidation activity was observed for the 50/50 Au/Pd catalyst and for samples with increasing amount of gold.

Original languageEnglish
Pages (from-to)359-368
Number of pages10
JournalApplied Catalysis A: General
Volume251
Issue number2
DOIs
Publication statusPublished - Sep 30 2003

Fingerprint

Palladium
Carbon Monoxide
Gold
Oxidation
Catalysts
Povidone
Catalytic oxidation
Chemisorption
Catalyst supports
Silicon Dioxide
Polymers
Ethanol
Thermodynamic properties
X ray photoelectron spectroscopy
Silica
Transmission electron microscopy
X ray diffraction
Temperature

Keywords

  • Au-Pd catalysts
  • CO oxidation
  • Polyvinylpyrrolidone
  • XPS characterization
  • XRD

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Activity of SiO2 supported gold-palladium catalysts in CO oxidation. / Venezia, A. M.; Liotta, L. F.; Pantaleo, G.; La Parola, V.; Deganello, G.; Beck, A.; Koppány, Z.; Frey, K.; Horváth, D.; Guczi, L.

In: Applied Catalysis A: General, Vol. 251, No. 2, 30.09.2003, p. 359-368.

Research output: Contribution to journalArticle

Venezia AM, Liotta LF, Pantaleo G, La Parola V, Deganello G, Beck A et al. Activity of SiO2 supported gold-palladium catalysts in CO oxidation. Applied Catalysis A: General. 2003 Sep 30;251(2):359-368. https://doi.org/10.1016/S0926-860X(03)00343-0
Venezia, A. M. ; Liotta, L. F. ; Pantaleo, G. ; La Parola, V. ; Deganello, G. ; Beck, A. ; Koppány, Z. ; Frey, K. ; Horváth, D. ; Guczi, L. / Activity of SiO2 supported gold-palladium catalysts in CO oxidation. In: Applied Catalysis A: General. 2003 ; Vol. 251, No. 2. pp. 359-368.
@article{82e3c07450b54b1c856c68715a1235c5,
title = "Activity of SiO2 supported gold-palladium catalysts in CO oxidation",
abstract = "Bimetallic Au-Pd catalysts supported on silica with different Au/Pd atomic ratios were prepared by simultaneous reduction of palladium and gold precursors by ethanol in the presence of the polymer, polyvinylpyrrolidone (PVP). Formation of alloyed particles was detected by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and CO chemisorption measurements. The catalysts were tested in the catalytic oxidation of CO using a plug-flow reactor. The CO conversion was determined as a function of temperature. The monometallic palladium and the palladium-rich catalysts behaved quite similarly and were the most active catalysts. A drastic reduction of the CO oxidation activity was observed for the 50/50 Au/Pd catalyst and for samples with increasing amount of gold.",
keywords = "Au-Pd catalysts, CO oxidation, Polyvinylpyrrolidone, XPS characterization, XRD",
author = "Venezia, {A. M.} and Liotta, {L. F.} and G. Pantaleo and {La Parola}, V. and G. Deganello and A. Beck and Z. Kopp{\'a}ny and K. Frey and D. Horv{\'a}th and L. Guczi",
year = "2003",
month = "9",
day = "30",
doi = "10.1016/S0926-860X(03)00343-0",
language = "English",
volume = "251",
pages = "359--368",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Activity of SiO2 supported gold-palladium catalysts in CO oxidation

AU - Venezia, A. M.

AU - Liotta, L. F.

AU - Pantaleo, G.

AU - La Parola, V.

AU - Deganello, G.

AU - Beck, A.

AU - Koppány, Z.

AU - Frey, K.

AU - Horváth, D.

AU - Guczi, L.

PY - 2003/9/30

Y1 - 2003/9/30

N2 - Bimetallic Au-Pd catalysts supported on silica with different Au/Pd atomic ratios were prepared by simultaneous reduction of palladium and gold precursors by ethanol in the presence of the polymer, polyvinylpyrrolidone (PVP). Formation of alloyed particles was detected by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and CO chemisorption measurements. The catalysts were tested in the catalytic oxidation of CO using a plug-flow reactor. The CO conversion was determined as a function of temperature. The monometallic palladium and the palladium-rich catalysts behaved quite similarly and were the most active catalysts. A drastic reduction of the CO oxidation activity was observed for the 50/50 Au/Pd catalyst and for samples with increasing amount of gold.

AB - Bimetallic Au-Pd catalysts supported on silica with different Au/Pd atomic ratios were prepared by simultaneous reduction of palladium and gold precursors by ethanol in the presence of the polymer, polyvinylpyrrolidone (PVP). Formation of alloyed particles was detected by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and CO chemisorption measurements. The catalysts were tested in the catalytic oxidation of CO using a plug-flow reactor. The CO conversion was determined as a function of temperature. The monometallic palladium and the palladium-rich catalysts behaved quite similarly and were the most active catalysts. A drastic reduction of the CO oxidation activity was observed for the 50/50 Au/Pd catalyst and for samples with increasing amount of gold.

KW - Au-Pd catalysts

KW - CO oxidation

KW - Polyvinylpyrrolidone

KW - XPS characterization

KW - XRD

UR - http://www.scopus.com/inward/record.url?scp=0141859970&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141859970&partnerID=8YFLogxK

U2 - 10.1016/S0926-860X(03)00343-0

DO - 10.1016/S0926-860X(03)00343-0

M3 - Article

AN - SCOPUS:0141859970

VL - 251

SP - 359

EP - 368

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 2

ER -