Show simple item record

dc.contributor.authorObalová, Lucie
dc.contributor.authorKarásková, Kateřina
dc.contributor.authorWach, Anna
dc.contributor.authorKuśtrowski, Piotr
dc.contributor.authorMamulová Kutláková, Kateřina
dc.contributor.authorMichalik, Svatopluk
dc.contributor.authorJirátová, Květa
dc.date.accessioned2013-09-24T08:12:24Z
dc.date.available2013-09-24T08:12:24Z
dc.date.issued2013
dc.identifier.citationApplied Catalysis A: General. 2013, vol. 462, p. 227-235.cs
dc.identifier.issn0926-860X
dc.identifier.urihttp://hdl.handle.net/10084/100681
dc.description.abstractAlkali promoted Co4MnAlOx mixed oxide (molar ratio of alkali metal/Co = 0.037) were prepared by impregnation of calcined Co–Mn–Al hydrotalcite (molar ratio Co:Mn:Al = 4:1:1) with an aqueous solution of Li, Na, K, Rb or Cs nitrate. The catalysts were characterized by AAS, SEM/EDX, N2 physisorption, XRPD, XPS, H2-TPR, TPD of CO2 and NH3 and tested for N2O decomposition in inert gas and simulated waste gas from HNO3 production. N2O conversion over alkali promoted Co4MnAlOx mixed oxide decreased in order Cs > Rb > K > Na = Co4MnAlOx > Li in inert gas and was shifted to the lower values in the presence of typical components (NOx, O2 and H2O) of flue gas. The addition of alkali promoters to the Co4MnAlOx mixed oxide resulted in a modification of both electronic properties of active metals and acid–base function of the catalyst surface. The promotional effect of alkali metals is connected with their ionization potential, the charge transfer to the catalyst and a decrease in binding energies of all catalyst components (Co, Mn, Al and O). Pilot plant verification of N2O decomposition over K-promoted Co4MnAlOx is shown.cs
dc.language.isoNeuvedenocs
dc.publisherElseviercs
dc.relation.ispartofseriesApplied Catalysis A: Generalcs
dc.relation.urihttp://dx.doi.org/10.1016/j.apcata.2013.05.011cs
dc.rightsCopyright © 2013 Elsevier B.V. All rights reserved.
dc.subjectN2O decompositioncs
dc.subjectalkali metalcs
dc.subjectpromotercs
dc.subjectcobalt oxidecs
dc.subjectlayered double hydroxidecs
dc.titleAlkali metals as promoters in Co-Mn-Al mixed oxide for N2O decompositioncs
dc.typearticlecs
dc.identifier.doi10.1016/j.apcata.2013.05.011
dc.rights.accessopenAccess
dc.type.versionsubmittedVersion
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume462cs
dc.description.lastpage235cs
dc.description.firstpage227cs
dc.identifier.wos000323018700027


Files in this item

This item appears in the following Collection(s)

Show simple item record