Coordination of extraframework Li+ cation in the MCM-22 and MCM-36 zeolite: FTIR study of CO adsorbed

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F13%3A39896338" target="_blank" >RIV/00216275:25310/13:39896338 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/13:00391666

Výsledek na webu

<a href="http://link.springer.com/article/10.1007%2Fs10450-012-9467-2" target="_blank" >http://link.springer.com/article/10.1007%2Fs10450-012-9467-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10450-012-9467-2" target="_blank" >10.1007/s10450-012-9467-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coordination of extraframework Li+ cation in the MCM-22 and MCM-36 zeolite: FTIR study of CO adsorbed

Popis výsledku v původním jazyce

Nature and population of Li+ cationic sites in MCM-22 zeolite and its pillared form (MCM-36) were investigated by means of adsorption of CO as a probe molecule. CO stretching frequency and adsorption heat were measured by FTIR spectroscopy and adsorptionmicrocalorimetry. Intrazeolitic carbonyl complexes on Li+ cations in MCM-22 and MCM-36 are characterized by two main vibrational bands at 2,195 and 2,188 cm(-1). Band at higher wavenumbers is ascribed to carbonyls on Li+ ions coordinated only to two oxygen atoms at the intersection of 10-ring channels and interacting with CO molecule by energy around 45 kJ mol(-1). Band at 2,188 cm(-1) was assigned to the carbonyls on Li+ cations located on top of 5 or 6-rings on the channel walls and coordinated to three or four oxygen atoms, interacting with CO molecule by energy 33-36 kJ mol(-1). Effect of pillaring and layered form of zeolite on nature and population of Li+ cationic sites is also discussed, as well as the formation of dicarbonyl co

Název v anglickém jazyce

Coordination of extraframework Li+ cation in the MCM-22 and MCM-36 zeolite: FTIR study of CO adsorbed

Popis výsledku anglicky

Nature and population of Li+ cationic sites in MCM-22 zeolite and its pillared form (MCM-36) were investigated by means of adsorption of CO as a probe molecule. CO stretching frequency and adsorption heat were measured by FTIR spectroscopy and adsorptionmicrocalorimetry. Intrazeolitic carbonyl complexes on Li+ cations in MCM-22 and MCM-36 are characterized by two main vibrational bands at 2,195 and 2,188 cm(-1). Band at higher wavenumbers is ascribed to carbonyls on Li+ ions coordinated only to two oxygen atoms at the intersection of 10-ring channels and interacting with CO molecule by energy around 45 kJ mol(-1). Band at 2,188 cm(-1) was assigned to the carbonyls on Li+ cations located on top of 5 or 6-rings on the channel walls and coordinated to three or four oxygen atoms, interacting with CO molecule by energy 33-36 kJ mol(-1). Effect of pillaring and layered form of zeolite on nature and population of Li+ cationic sites is also discussed, as well as the formation of dicarbonyl co

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Vývoj nových nanoporézních adsorbentů a katalyzátorů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Adsorption - Journal of the International Adsorption Society

ISSN

0929-5607

e-ISSN

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Svazek periodika

19

Číslo periodika v rámci svazku

2-4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

455-463

Kód UT WoS článku

000317620800027

EID výsledku v databázi Scopus

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