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Statements

Subject Item
n2:RIV%2F61388955%3A_____%2F13%3A00394510%21RIV14-GA0-61388955
rdf:type
n8:Vysledek skos:Concept
dcterms:description
The main motivation for the synthesis of Ti18O2 was the investigation of surface effects during titania/gas interaction. The interaction with carbon dioxide was investigated with the aim to explore oxygen isotope exchange at the Ti18,17O2/CO2 interface. For this purpose, high-resolution Fourier transform infrared spectroscopy of the gas phase was adopted. In the present study, we have explored the oxygen isotope exchange between gaseous C16O2 and solid Ti18O2 or Ti17O2. The present measurement in dark mixtures has, as its primary goal, the determination of the time-scale of the spontaneous isotope exchange between carbon dioxide and solid TiO2. The profiles of the individual lines of selected isotopologues (isolated lines in the spectrum) were fitted and quantified. The quantification of the spectra was carried out on the basis of calibration measurements of the absorption spectra of individual isotopologues (reference gases) of carbon dioxide at different pressures. The concentrations of individual isotopologues determined from the intensity profiles of the individual rotation–vibration lines are characterized by the exponential decrease of the 16O–C–16O isotopologue and the exponential increase of the 18O–C-18O isotopologue. The 18O–C–16O acts as an intermediate in the mixture and its concentration remains almost constant. The main motivation for the synthesis of Ti18O2 was the investigation of surface effects during titania/gas interaction. The interaction with carbon dioxide was investigated with the aim to explore oxygen isotope exchange at the Ti18,17O2/CO2 interface. For this purpose, high-resolution Fourier transform infrared spectroscopy of the gas phase was adopted. In the present study, we have explored the oxygen isotope exchange between gaseous C16O2 and solid Ti18O2 or Ti17O2. The present measurement in dark mixtures has, as its primary goal, the determination of the time-scale of the spontaneous isotope exchange between carbon dioxide and solid TiO2. The profiles of the individual lines of selected isotopologues (isolated lines in the spectrum) were fitted and quantified. The quantification of the spectra was carried out on the basis of calibration measurements of the absorption spectra of individual isotopologues (reference gases) of carbon dioxide at different pressures. The concentrations of individual isotopologues determined from the intensity profiles of the individual rotation–vibration lines are characterized by the exponential decrease of the 16O–C–16O isotopologue and the exponential increase of the 18O–C-18O isotopologue. The 18O–C–16O acts as an intermediate in the mixture and its concentration remains almost constant.
dcterms:title
The application of high-resolution IR spectroscopy and isotope labeling for detailed investigation of TiO2/gas interface reactions The application of high-resolution IR spectroscopy and isotope labeling for detailed investigation of TiO2/gas interface reactions
skos:prefLabel
The application of high-resolution IR spectroscopy and isotope labeling for detailed investigation of TiO2/gas interface reactions The application of high-resolution IR spectroscopy and isotope labeling for detailed investigation of TiO2/gas interface reactions
skos:notation
RIV/61388955:_____/13:00394510!RIV14-GA0-61388955
n8:predkladatel
n14:ico%3A61388955
n3:aktivita
n18:I n18:P
n3:aktivity
I, P(GA13-07724S), P(GAP208/10/2302)
n3:cisloPeriodika
1
n3:dodaniDat
n12:2014
n3:domaciTvurceVysledku
n4:5814804 n4:7967748 n4:5808111 n4:1918257 n4:9704418
n3:druhVysledku
n17:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n19:predkladatel
n3:idSjednocenehoVysledku
61752
n3:idVysledku
RIV/61388955:_____/13:00394510
n3:jazykVysledku
n15:eng
n3:klicovaSlova
isotope exchange; titania; isotope labeling
n3:klicoveSlovo
n5:isotope%20exchange n5:isotope%20labeling n5:titania
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[B8617FEBF2BB]
n3:nazevZdroje
Optical Materials
n3:obor
n16:CF
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n9:GA13-07724S n9:GAP208%2F10%2F2302
n3:rokUplatneniVysledku
n12:2013
n3:svazekPeriodika
36
n3:tvurceVysledku
Zelinger, Zdeněk Zukalová, Markéta Ferus, Martin Civiš, Svatopluk Kavan, Ladislav
n3:wos
000327232600030
s:issn
0925-3467
s:numberOfPages
4
n13:doi
10.1016/j.optmat.2013.04.009