The quantity of Cu+ ions forming isolated and bridged carbonyl complexes in FER zeolites determined by IR spectroscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895165" target="_blank" >RIV/00216275:25310/12:39895165 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.vibspec.2011.11.010" target="_blank" >http://dx.doi.org/10.1016/j.vibspec.2011.11.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.vibspec.2011.11.010" target="_blank" >10.1016/j.vibspec.2011.11.010</a>

Result language
angličtina
Original language name
The quantity of Cu+ ions forming isolated and bridged carbonyl complexes in FER zeolites determined by IR spectroscopy
Original language description
The integral absorption coefficients for IR bands of carbonyl complexes formed in Cu+Me+-FER zeolites (Me = Na, K, Cs) were determined. Previous work on such systems based on combination of several experimental techniques and perDFT calculations showed that stable monodentate carbonyls on isolated cations in the so-called single cation sites (SCS) Cut(+)-CO and Cu+-CO-Me+ (Me = K, Cs) complexes, where CO molecule is bridging two nearby cations in the so-called heterogeneous dual cation sites (DCS), areformed. In this contribution we made an attempt to determine the quantity of individual carbonyl types using the analysis of IR spectra for CO monolayer coverage on Cu+Me+-FER samples varying in copper content, type of co-cation and nominal Si/Al ratio.Study results in conclusion that IR absorption for SCS (band at 2156cm(-1)) and heterogeneous DCS (bands at 2138 and 2112cm(-1)) complexes has the same magnitude and reaches 21.5cm mu mol(-1). The 95% confidence limits were estimated at +
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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