6533b824fe1ef96bd1280a80
RESEARCH PRODUCT
NO reduction by CO in the presence of water over gold supported catalysts on CeO2-Al2O3 mixed support, prepared by mechanochemical activation
Ivan IvanovLyuba IlievaJanusz W. SobczakDonka AndreevaGiuseppe PantaleoAnna Maria Veneziasubject
HydrogenProcess Chemistry and TechnologyInorganic chemistryBinary compoundchemistry.chemical_elementHeterogeneous catalysisCatalysisCatalysischemistry.chemical_compoundchemistryTransition metalSelectivityGeneral Environmental ScienceHydrogen productionCarbon monoxidedescription
Abstract The reduction of NO by CO was studied on gold catalysts supported on ceria-alumina, prepared by mechanochemical activation. The samples were characterized by means of XRD, TPR, XPS and Raman spectroscopy. The influence of water in the feed on the catalytic activity was evaluated as well. It was established that the addition of hydrogen and water improves NO reduction activity by CO. The role of water was connected to the hydrogen production by WGS. The role of oxygen vacancies created in ceria structure in the presence of alumina was also discussed. The 100% selectivity to N2 at about 200 8C was kept in all cases of catalytic measurements, making the studied gold catalysts promising for practical application. # 2007 Elsevier B.V. All rights reserved.
year | journal | country | edition | language |
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2007-10-01 | Applied Catalysis B: Environmental |