Gold catalysts supported on CeO2 and CeO2–Al2O3 for NO reduction by CO

6533b82bfe1ef96bd128d4a9

RESEARCH PRODUCT

Gold catalysts supported on CeO2 and CeO2–Al2O3 for NO reduction by CO

Giuseppe Pantaleo Anna Maria Venezia Donka Andreeva Ivan Ivanov Lyuba Ilieva

subject

Chemistry Process Chemistry and Technology Catalyst support Inorganic chemistry Heterogeneous catalysis Catalysis Catalysis chemistry.chemical_compound symbols.namesake X-ray photoelectron spectroscopy Transition metal Aluminium oxide symbols Particle size Raman spectroscopy General Environmental Science

description

Abstract The reduction of NO x by CO was studied over gold catalyst supported on ceria and ceria–alumina. The mixed supports with different CeO 2 /Al 2 O 3 ratios were prepared by co-precipitation. The catalysts were characterized by means of XRD, TPR, XPS and Raman spectroscopy. The addition of alumina led to a slight enlargement of the gold particles, while the ceria particle size was decreased. Deeper oxygen vacancies formation in the presence of alumina was detected by TPR, XPS and Raman spectroscopy, compared to the pure ceria support. The samples exhibited a high and stable activity and 100% selectivity towards N 2 was reached at 200 °C.

year	journal	country	edition	language
2006-05-01	Applied Catalysis B: Environmental

https://doi.org/10.1016/j.apcatb.2005.12.014

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