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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F07%3A00005913%21RIV08-MSM-25310___
rdf:type
n16:Vysledek skos:Concept
dcterms:description
The interaction of CO with extraframework Li+ ions coordinated in ZSM-5 and FER zeolites with different compositions is investigated by FTIR spectroscopy, and the correlation between Li+ coordination, stability of CO adsorption complexes, and nu(CO) frequencies is discussed in terms of the theoretical investigation of the stability and vibrational dynamics of CO adsorption complexes. Differences in IR spectra of adsorbed CO due to the following effects were considered: (i) various Si/Al ratios, ( ii) differences in zeolite topology, ( iii) temperature, and ( iv) the effect of a co-cation on relative stability and metal cation site preferences. The correlation between Li+ coordination and nu(CO) frequencies of CO adsorption complexes discussed for Li zeolites is extrapolated to mesoporous Li-(Al) MCM-41 materials. The features in the IR spectra of CO/Li-(Al)MCM- 41 are assigned to CO adsorption complexes formed on top of five- and six-membered rings on the surface of a channel wall. The spectra of CO/L Interakce CO s mimomřížkovými Li+ ionty koordinovanými v ZSM-5 a FER zeolitech s různým složením byla zkoumána a vztah mezi Li+ koordinací, stabilitou a frekvencí vibrace karbonylových komplexů byl diskutován spolu s teoretickým výzkumy stability a vibrační dynamiky. Rozdíly ve spektrech byly zkoumány vzhledem k (i) různému Si/Al, (ii) rozdílné struktuře zeolitu, (iii) teplotě , (iv) typu ko-kationtu. Získané korelace mezi koordinací a frekvencí vibrací karbonylových komplexů byly extrapolovány do mesoporézních materiálů Li-(Al) MCM-41. Spektrální pásy byly přiřazeny k COLi+ komplexům na vrcholu 5- a 6-člených kruhů na povrchu stěn kanálů. The interaction of CO with extraframework Li+ ions coordinated in ZSM-5 and FER zeolites with different compositions is investigated by FTIR spectroscopy, and the correlation between Li+ coordination, stability of CO adsorption complexes, and nu(CO) frequencies is discussed in terms of the theoretical investigation of the stability and vibrational dynamics of CO adsorption complexes. Differences in IR spectra of adsorbed CO due to the following effects were considered: (i) various Si/Al ratios, ( ii) differences in zeolite topology, ( iii) temperature, and ( iv) the effect of a co-cation on relative stability and metal cation site preferences. The correlation between Li+ coordination and nu(CO) frequencies of CO adsorption complexes discussed for Li zeolites is extrapolated to mesoporous Li-(Al) MCM-41 materials. The features in the IR spectra of CO/Li-(Al)MCM- 41 are assigned to CO adsorption complexes formed on top of five- and six-membered rings on the surface of a channel wall. The spectra of CO/L
dcterms:title
FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions IČ a teoretická studie interakce CO s Li+ ionty v mikro a mesoporézních matricích: koordinace a lokalizace Li+ iontů
skos:prefLabel
IČ a teoretická studie interakce CO s Li+ ionty v mikro a mesoporézních matricích: koordinace a lokalizace Li+ iontů FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions FTIR and Theoretical Study of CO Interactions with Li+ Ions in Micro- and Mesoporous Matrices: Coordination and Localization of Li+ ions
skos:notation
RIV/00216275:25310/07:00005913!RIV08-MSM-25310___
n4:strany
11353-11362
n4:aktivita
n13:S n13:P n13:Z
n4:aktivity
P(GA203/06/0324), P(LC512), S, Z(MSM0021627501)
n4:cisloPeriodika
N
n4:dodaniDat
n17:2008
n4:domaciTvurceVysledku
n12:9333312 n12:1747681 n12:4017803 n12:7420900
n4:druhVysledku
n8:J
n4:duvernostUdaju
n7:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
422697
n4:idVysledku
RIV/00216275:25310/07:00005913
n4:jazykVysledku
n19:eng
n4:klicovaSlova
alkali-metal cations; high-silica zeolites; carbon-monoxide; theoretical calculations; infrared-spectroscopy
n4:klicoveSlovo
n5:infrared-spectroscopy n5:alkali-metal%20cations n5:carbon-monoxide n5:theoretical%20calculations n5:high-silica%20zeolites
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[806954DCE4E6]
n4:nazevZdroje
Journal of Physical Chemistry Part C: Nanomaterials and Interfaces
n4:obor
n15:CF
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
6
n4:projekt
n9:LC512 n9:GA203%2F06%2F0324
n4:rokUplatneniVysledku
n17:2007
n4:svazekPeriodika
111
n4:tvurceVysledku
Bludský, Ota Nachtigall, Petr Nachtigallová, Dana Bulánek, Roman Frolich, Karel Drobná, Helena
n4:zamer
n10:MSM0021627501
s:issn
1932-7447
s:numberOfPages
10
n14:organizacniJednotka
25310