Počet záznamů: 1

Experimental and theoretical determination of adsorption heats of CO2 over alkali metal exchanged ferrierites with different Si/Al ratio

SYSNO ASEP	0343891
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Experimental and theoretical determination of adsorption heats of CO2 over alkali metal exchanged ferrierites with different Si/Al ratio
Tvůrce(i)	Zukal, Arnošt (UFCH-W)_RID Pulido, A. (CZ) Gil, B. (PL) Nachtigall, P. (CZ) Bludský, Ota (UOCHB-X)_{RID, ORCID} Rubeš, M. (PL) Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Zdroj.dok.	Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076 Roč. 12, č. 24 (2010), s. 6413-6422
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	adsorption ; CO2 ; FTIR spectroscopy
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
CEP	GA203/09/0143 GA ČR - Grantová agentura ČR
	LC512 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	GA203/08/0604 GA ČR - Grantová agentura ČR
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
	AV0Z40550506 - UOCHB-X (2005-2011)
UT WOS	000278588500015
DOI	10.1039/c001950j
Anotace	The adsorption of CO2 in Li-, Na-, and K-FER was investigated by a combination of volumetric adsorption experiments, FTIR spectroscopy, and density functional theory. Experimental isosteric heats of CO2, Qst, depend significantly on the cation size, cation concentration, and on the amount of adsorbed CO2. The differences observed in experimentally determined isosteric heats were interpreted at the molecular level based on good agreement between experimental and calculated characteristics. The highest interaction energies were found for CO2 adsorbed on so-called dual cation sites in which CO2 is bridged between two alkali metal cations. The formation of CO2 adsorption complexes on dual cation sites is particularly important on Na-FER and K-FER samples with higher cation concentration. On the contrary, the differences in Qst observed for Li-FER samples are due to the changes in the Li+ coordination with the framework.
Pracoviště	Ústav fyzikální chemie J.Heyrovského
Kontakt	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Rok sběru	2011

Počet záznamů: 1