Počet záznamů: 1

Thermodynamics of CO2 adsorption on functionalized SBA-15 silica. NLDFT analysis of surface energetic heterogeneity

SYSNO ASEP	0361669
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Thermodynamics of CO2 adsorption on functionalized SBA-15 silica. NLDFT analysis of surface energetic heterogeneity
Tvůrce(i)	Zukal, Arnošt (UFCH-W)_RID Jagiello, J. (US) Mayerová, Jana (UFCH-W) Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Zdroj.dok.	Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076 Roč. 13, č. 34 (2011), s. 15468-15475
Poč.str.	8 s.
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	thermodynamics ; CO2 adsorption ; SBA-15 silica
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
CEP	GA203/08/0604 GA ČR - Grantová agentura ČR
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000293900400012
DOI	10.1039/C1CP20943D
Anotace	Siliceous SBA-15 mesoporous molecular sieves were functionalized with different amounts of 3-aminopropyl-trimethoxysilane. To obtain a more detailed insight into the material properties of the prepared samples, their textural parameters were combined with results of thermal analysis. Adsorption isotherms of carbon dioxide on parent and functionalized SBA-15 were measured in the temperature range from 273 to 333 K. From the temperature dependence of CO2 isotherms the isosteric adsorption heats of CO2 were determined and discussed. Information about the surface energetic heterogeneity caused by tethered 3-aminopropyl groups were obtained from CO2 adsorption energy distributions calculated using the theoretical CO2 adsorption isotherms derived from the non-local density functional theory. The values of isosteric heats and the energy distributions of CO2 adsorption detect highly energetic sites and enabled quantification of their concentrations.
Pracoviště	Ústav fyzikální chemie J.Heyrovského
Kontakt	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Rok sběru	2012

Počet záznamů: 1