About: Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water

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About: Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Limiting activity coefficients in water were measured for 17 moderately hydrophobic compounds at several temperatures. Three experimental techniques, viz. Rayleigh distillation, IGS, and HSA, were alternatively employed. With the objective to establish the reliable temperature dependence of limiting activity coefficient, the activity coefficient values were combined with calorimetric data determined previously in our laboratories. This database was further supplemented with critically evaluated literature data. The 3-parameter equation assuming temperature independent heat capacity was found to represent available information adequately except for 1-butanol. For all the solutes, activity coefficient temperature dependence exhibits a maximum between 273 and 373 K. As shown, by processing simultaneously the equilibrium and thermal data, consistent and accurate temperature dependence of activity coefficient can be obtained for the range 273 - 373 K even in cases of minimum underlying information. Limiting activity coefficients in water were measured for 17 moderately hydrophobic compounds at several temperatures. Three experimental techniques, viz. Rayleigh distillation, IGS, and HSA, were alternatively employed. With the objective to establish the reliable temperature dependence of limiting activity coefficient, the activity coefficient values were combined with calorimetric data determined previously in our laboratories. This database was further supplemented with critically evaluated literature data. The 3-parameter equation assuming temperature independent heat capacity was found to represent available information adequately except for 1-butanol. For all the solutes, activity coefficient temperature dependence exhibits a maximum between 273 and 373 K. As shown, by processing simultaneously the equilibrium and thermal data, consistent and accurate temperature dependence of activity coefficient can be obtained for the range 273 - 373 K even in cases of minimum underlying information. (en)
Title	Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water (en)
skos:prefLabel	Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water Determination of temperature dependence of limiting activity coefficients for a group of moderately hydrophobic organic solutes in water (en)
skos:notation	RIV/60461373:22340/02:00006995!RIV/2004/MSM/223404/N
http://linked.open.../vavai/riv/strany	135-164
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 223400008)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Hovorka, Štěpán Dohnal, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	642767
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/02:00006995
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Infinite dilution; Activity coefficient; Henry's law constant; Temperature dependence; Organic solvents; Water; (en)
http://linked.open.../riv/klicoveSlovo	Infinite dilution Temperature dependence Water Henry's law constant Activity coefficient Organic solvents
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[4E2A17C78DF3]
http://linked.open...i/riv/nazevZdroje	Fluid Phase Equilibria
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	201
http://linked.open...iv/tvurceVysledku	Dohnal, Vladimír Hovorka, Štěpán Roux, Alain H. Roux-Desgranges, Geneviéve
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20223400008
issn	0378-3812
number of pages	30 (xsd:int)
http://localhost/t...ganizacniJednotka	22340

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