Partial molar properties and solute-solvent interactions in dilute solutions of C60 and C70 fullerenes and C21 to C40 n-Alkanes in CO2 from supercritical fluid chromatography.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Partial molar properties and solute-solvent interactions in dilute solutions of C60 and C70 fullerenes and C21 to C40 n-Alkanes in CO2 from supercritical fluid chromatography.

Popis výsledku v původním jazyce

Retention factors of C60 and C70 fullerenes and eleven heavy n-alkanes have been measured within 311-431 K and 8.7-39 MPa by supercritical fluid chromatography.(SFC) in an open tubular capillary column using poly(methyl-n-octyl siloxane) as the stationary polymer and carbon dioxide as the mobile-phase fluid. The retention factors have been employed to derive the partial molar volumes of the solutes at infinite dilution in CO2, and the infinite-dilution molar enthalpies of transfer of the solutes from the stationary phase to supercritical CO2. The partial molar volumes have subsequently been transformed to quantities characterizing the short-range solute-CO2 interactions. Attention has been given to the effect on these quantities of the corrections fordissolution of CO2 in the stationary polymer. Overall, the resultant partial molar properties suggest that, compared to the a-alkane-CO2 interactions, the fullerene-CO2 interactions are distinctly less attractive.

Název v anglickém jazyce

Partial molar properties and solute-solvent interactions in dilute solutions of C60 and C70 fullerenes and C21 to C40 n-Alkanes in CO2 from supercritical fluid chromatography.

Popis výsledku anglicky

Retention factors of C60 and C70 fullerenes and eleven heavy n-alkanes have been measured within 311-431 K and 8.7-39 MPa by supercritical fluid chromatography.(SFC) in an open tubular capillary column using poly(methyl-n-octyl siloxane) as the stationary polymer and carbon dioxide as the mobile-phase fluid. The retention factors have been employed to derive the partial molar volumes of the solutes at infinite dilution in CO2, and the infinite-dilution molar enthalpies of transfer of the solutes from the stationary phase to supercritical CO2. The partial molar volumes have subsequently been transformed to quantities characterizing the short-range solute-CO2 interactions. Attention has been given to the effect on these quantities of the corrections fordissolution of CO2 in the stationary polymer. Overall, the resultant partial molar properties suggest that, compared to the a-alkane-CO2 interactions, the fullerene-CO2 interactions are distinctly less attractive.

Druh

D - Stať ve sborníku

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název statě ve sborníku

76th International Bunsen Discussion Meeting Global Phase Diagrams. Book of Abstracts.

ISBN

3-8265-9130-5

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

75

Název nakladatele

Shaker Verlag

Místo vydání

Aachen

Místo konání akce

Walberberg [DE]

Datum konání akce

19. 8. 2001

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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