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dc.contributor.authorObalová, Lucie
dc.contributor.authorKarásková, Kateřina
dc.contributor.authorJirátová, Květa
dc.contributor.authorKovanda, František
dc.identifier.citationApplied Catalysis B: Environmental. 2009, vol. 90, issue 1-2, p. 132-140.en
dc.description.abstractA series of catalysts was prepared by thermal treatment (500 °C) of the coprecipitated Co–Mn–Al layered double hydroxide (Co:Mn:Al molar ratio of 4:1:1) doped with various amount of potassium (0–3 wt%). Obtained spinel-like mixed oxides were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, BET surface area measurements, temperature-programmed H2 reduction, and temperature-programmed CO2 and NH3 desorption. The prepared catalysts were tested for N2O decomposition to determine the effect of K addition on the catalytic activity in the presence of O2, NOx and H2O. An optimum K content of ca. 0.9–1.6 wt% was found to achieve a high catalytic activity in the presence of O2 and H2O, while the non-modified Co–Mn–Al mixed oxide was the most active catalyst in the presence of O2 and NOx. The addition of potassium to the Co–Mn–Al mixed oxide apparently results in a modification of both electronic properties of active metals and acid-base function of the catalyst surface.en
dc.relation.ispartofseriesApplied Catalysis B: Environmentalen
dc.subjectnitrous oxideen
dc.subjectcatalytic decompositionen
dc.subjectlayered double hydroxidesen
dc.subjectmixed oxide catalystsen
dc.subjectpotassium promoteren
dc.titleEffect of potassium in calcined Co–Mn–Al layered double hydroxide on the catalytic decomposition of N2Oen
dc.identifier.locationNení ve fondu ÚKen

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