Effect of impurity and pretreatment conditions on the catalytic activity of Au powder for CO oxidation

Recent X-ray photoelectron spectrometer(XPS) analysis of Au powder synthesized by evaporating high purity gold metal (> 99. 99%) in an inert gas detected impurity metals such as Ag and In at levels which far exceed those expected from the impurity levels of raw gold metal. Several samples of Au p...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Catalysis letters 2004-09, Vol.97 (3-4), p.203-208
Hauptverfasser:	IIZUKA, Yasuo, KAWAMOTO, Aya, AKITA, Kazuhiro, DATE, Masakazu, TSUBOTA, Susumu, OKUMURA, Mitsutaka, HARUTA, Masatake
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Catalytic activity Chemistry Exact sciences and technology General and physical chemistry Gold Impurities Level (quantity) Oxidation Photoelectrons Pretreatment Rare gases Silver Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry X ray photoelectron spectroscopy
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Recent X-ray photoelectron spectrometer(XPS) analysis of Au powder synthesized by evaporating high purity gold metal (> 99. 99%) in an inert gas detected impurity metals such as Ag and In at levels which far exceed those expected from the impurity levels of raw gold metal. Several samples of Au powder containing different amount of impurity metals were prepared to examine whether the activity of the Au powder for CO oxidation depends upon the impurity or not. The activity of the powder showed a strong correlation with the surface concentration of Ag.
ISSN:	1011-372X 1572-879X
DOI:	10.1023/b:catl.0000038585.12878.9a