Influence of the support crystal structure of WO3/Au catalysts in CO oxidation

Tamás Firkala, Balázs Fórizs, Eszter Drotár, A. Tompos, A. Tóth, K. Josepovits, K. László, Markku Leskelä, Imre Miklós Szilágyi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Gold nanoparticles (partially below 5 nm in diameter) were successfully deposited on hexagonal and monoclinic WO3 supports by deposition-precipitation, which had been considered previously not feasible owing to the low isoelectronic point of WO3. The catalysts were characterized by TEM, SEM, N2-adsorption, XRD, and XPS. In CO oxidation m-WO3/Au showed better catalytic activity over 100 °C than h-WO3/Au. This was explained by that m-WO3 had higher surface OH coverage, resulting in larger Au nanoparticle loading and thus better catalytic activity.

Original languageEnglish
Pages (from-to)831-836
Number of pages6
JournalCatalysis Letters
Volume144
Issue number5
DOIs
Publication statusPublished - 2014

Fingerprint

Carbon Monoxide
Catalyst supports
Catalyst activity
Crystal structure
Nanoparticles
Oxidation
Catalysts
Gold
X ray photoelectron spectroscopy
Transmission electron microscopy
Adsorption
Scanning electron microscopy

Keywords

  • Au
  • Catalysis
  • CO oxidation
  • Composition
  • Structure
  • Support

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Influence of the support crystal structure of WO3/Au catalysts in CO oxidation. / Firkala, Tamás; Fórizs, Balázs; Drotár, Eszter; Tompos, A.; Tóth, A.; Josepovits, K.; László, K.; Leskelä, Markku; Szilágyi, Imre Miklós.

In: Catalysis Letters, Vol. 144, No. 5, 2014, p. 831-836.

Research output: Contribution to journalArticle

Firkala, Tamás ; Fórizs, Balázs ; Drotár, Eszter ; Tompos, A. ; Tóth, A. ; Josepovits, K. ; László, K. ; Leskelä, Markku ; Szilágyi, Imre Miklós. / Influence of the support crystal structure of WO3/Au catalysts in CO oxidation. In: Catalysis Letters. 2014 ; Vol. 144, No. 5. pp. 831-836.
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AU - Josepovits, K.

AU - László, K.

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