Tungsten as an interface agent leading to highly active and stable copper–ceria water gas shift catalyst

Tungsten as an interface agent leading to highly active and stable copper–ceria water gas shift catalyst

[Display omitted] ► System prepared from an initial ternary oxide with fluorite structure. ► High activity and stability at temperatures above 300C and GHSV of 42,000h−1. ► In situ XRD-XAS-Vibrational experiments show that presence of a W–Cu mixed oxide phase is key to enhance catalytic properties....

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Veröffentlicht in:Applied catalysis. B, Environmental Environmental, 2013-03, Vol.132-133, p.423-432
Hauptverfasser: Kubacka, Anna, Si, Rui, Michorczyk, Piotr, Martínez-Arias, Arturo, Xu, Wenqian, Hanson, Jonathan C., Rodriguez, José A., Fernández-García, Marcos
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Catalysts
Ceria
Chemistry
Copper
Exact sciences and technology
Fluorite
General and physical chemistry
In situ XRD
Mixed oxides
Oxides
Surface physical chemistry
Ternary systems
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Tungsten
Vibrational
WGS catalyst
X-rays
XAFS
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Zusammenfassung:[Display omitted] ► System prepared from an initial ternary oxide with fluorite structure. ► High activity and stability at temperatures above 300C and GHSV of 42,000h−1. ► In situ XRD-XAS-Vibrational experiments show that presence of a W–Cu mixed oxide phase is key to enhance catalytic properties. A series of W–Cu–Ce mixed oxide catalysts prepared by microemulsion was evaluated in the water-gas shift (WGS) reaction. At low temperatures (
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2012.12.013