Carbon monoxide adsorption on alkali-metal exchanged BEA zeolite: IR and thermodynamics study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895246" target="_blank" >RIV/00216275:25310/12:39895246 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.micromeso.2011.10.044" target="_blank" >http://dx.doi.org/10.1016/j.micromeso.2011.10.044</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2011.10.044" target="_blank" >10.1016/j.micromeso.2011.10.044</a>

Result language
angličtina
Original language name
Carbon monoxide adsorption on alkali-metal exchanged BEA zeolite: IR and thermodynamics study
Original language description
Interaction of carbon monoxide with extra-framework Na+ and K+ cations of the BEA zeolite was investigated by FTIR spectroscopy carried out under various temperatures, which allowed to obtain the corresponding IR spectra and to determine isosteric enthalpies of individual adsorption complexes. Three distinct bands were observed in the spectra: (i) a red-shifted band at 2112 and 2120 cm(-1) for Na- and K-BEA, respectively, assigned to O-down (isocarbonylic) complexes (ii) a blue-shifted band at 2180 and2167 cm(-1) for Na- and K-BEA, respectively, corresponding to C-down monocarbonyl complexes, and (iii) a band at the medium frequencies (2161 and 2149 cm(-1) for Na- and K-BEA, respectively) ascribing to linearly bridged carbonyl complexes on dual cationic sites, where CO molecule interacts with two nearby cations via both carbon and oxygen atoms. Adsorption enthalpies of CO adsorbed on Na- and K-BEA zeolite were estimated by means of temperature and pressure dependent FTIR spectroscopy.
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)<br>S - Specificky vyzkum na vysokych skolach

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

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