Quantitative analysis of IR spectra of carbonylic species in alkali-metal exchanged ZSM-5 and FER zeolites
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39898598" target="_blank" >RIV/00216275:25310/15:39898598 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.027" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2014.07.027</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.027" target="_blank" >10.1016/j.cattod.2014.07.027</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Quantitative analysis of IR spectra of carbonylic species in alkali-metal exchanged ZSM-5 and FER zeolites
Popis výsledku v původním jazyce
The molar absorption coefficients of IR bands previously assigned to monocarbonyls on isolated cations, bridged carbonyls interacting with two nearby cations and isocarbonyls formed on potassium and sodium cations in the FER and ZSM-5 zeolites were determined by analyzing data obtained under specific adsorption conditions by using IR spectroscopy coupled with volumetry. In accordance with the prediction of the electrostatic model of CO interaction with potassium and sodium cations, molar absorption coefficient of isocarbonyl species is higher than molar absorption coefficient of C-down monocarbonyl complex. Behavior of bridged carbonyl complexes does not obey general rule according to which, for localized vibrations, the band intensity increases as their frequency decreases. Calculated molar absorption coefficients of given type of carbonyl complex in different zeolite structures are not the same and cannot be generalized. Thanks to these results, the quantity of different surface carb
Název v anglickém jazyce
Quantitative analysis of IR spectra of carbonylic species in alkali-metal exchanged ZSM-5 and FER zeolites
Popis výsledku anglicky
The molar absorption coefficients of IR bands previously assigned to monocarbonyls on isolated cations, bridged carbonyls interacting with two nearby cations and isocarbonyls formed on potassium and sodium cations in the FER and ZSM-5 zeolites were determined by analyzing data obtained under specific adsorption conditions by using IR spectroscopy coupled with volumetry. In accordance with the prediction of the electrostatic model of CO interaction with potassium and sodium cations, molar absorption coefficient of isocarbonyl species is higher than molar absorption coefficient of C-down monocarbonyl complex. Behavior of bridged carbonyl complexes does not obey general rule according to which, for localized vibrations, the band intensity increases as their frequency decreases. Calculated molar absorption coefficients of given type of carbonyl complex in different zeolite structures are not the same and cannot be generalized. Thanks to these results, the quantity of different surface carb
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Vývoj nových nanoporézních adsorbentů a katalyzátorů</a><br>
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2015
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysis Today
ISSN
0920-5861
e-ISSN
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Svazek periodika
243
Číslo periodika v rámci svazku
April 2015
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
7
Strana od-do
62-68
Kód UT WoS článku
000347049900009
EID výsledku v databázi Scopus
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