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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F05%3A00002651%21RIV08-MSM-25310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Katalytická účinnost Fe-MFI v oxidaci propanu pomocí N2O a O2. Všechny studované materiály vykazovaly mizivou aktivitu v přítomnosti kyslíku, zatímco v přítomnosti N2O bylo dosaženo až 20% výtěžku. Výsledky charakterizace pomocí EPR a UV-vis spektroskopií naznačují, že aktivní částicí je část dobře dispergovaných částic železa. The performance of Fe-MFI zeolites in N2O- and O2-mediated conversion of propane to propene and oxygenates has been investigated over a set of calcined and steamed Fe-MFI (Si/Al = 12 - 620) catalysts containing iron originally in the framework, in cationic sites and as oxide-like supported Fe species. All the catalysts exhibited very low activity in oxidation of propane by molecular oxygen, whereas in the propane reaction with nitrous oxide the propene yield was up to 20 %, besides formation of other oxygenates. The results of UV-Vis and EPR spectroscopy and reaction kinetic tests enabled to suggest that very small part of the well-isolated Fe-species is extremely active in propane oxidation by nitrous oxide following the %22propane - propanol ? propene - propanal ? COx%22 reaction pathway. The performance of Fe-MFI zeolites in N2O- and O2-mediated conversion of propane to propene and oxygenates has been investigated over a set of calcined and steamed Fe-MFI (Si/Al = 12 - 620) catalysts containing iron originally in the framework, in cationic sites and as oxide-like supported Fe species. All the catalysts exhibited very low activity in oxidation of propane by molecular oxygen, whereas in the propane reaction with nitrous oxide the propene yield was up to 20 %, besides formation of other oxygenates. The results of UV-Vis and EPR spectroscopy and reaction kinetic tests enabled to suggest that very small part of the well-isolated Fe-species is extremely active in propane oxidation by nitrous oxide following the %22propane - propanol ? propene - propanal ? COx%22 reaction pathway.
dcterms:title
Occurrence of Fe Species in Zeolites Active in N2O Propane Oxidation to Propene and propanal Occurrence of Fe Species in Zeolites Active in N2O Propane Oxidation to Propene and propanal xx
skos:prefLabel
Occurrence of Fe Species in Zeolites Active in N2O Propane Oxidation to Propene and propanal xx Occurrence of Fe Species in Zeolites Active in N2O Propane Oxidation to Propene and propanal
skos:notation
RIV/00216275:25310/05:00002651!RIV08-MSM-25310___
n3:strany
1977-1984
n3:aktivita
n11:Z n11:P
n3:aktivity
P(GA104/03/1120), Z(MSM0021627501)
n3:cisloPeriodika
158
n3:dodaniDat
n9:2008
n3:domaciTvurceVysledku
n15:1747681 n15:7420900
n3:druhVysledku
n5:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
533938
n3:idVysledku
RIV/00216275:25310/05:00002651
n3:jazykVysledku
n19:eng
n3:klicovaSlova
propane; oxidation; zeolite
n3:klicoveSlovo
n14:zeolite n14:propane n14:oxidation
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[CC1462B279E0]
n3:nazevZdroje
Studies in Surface Science and Catalysis
n3:obor
n4:CF
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
6
n3:projekt
n17:GA104%2F03%2F1120
n3:rokUplatneniVysledku
n9:2005
n3:svazekPeriodika
N
n3:tvurceVysledku
Sobalík, Zdeněk Novoveská, Kateřina Nachtigall, Petr Adam, Jan Bulánek, Roman Kreibich, V.
n3:zamer
n16:MSM0021627501
s:issn
0167-2991
s:numberOfPages
8
n18:organizacniJednotka
25310