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Interaction second virial coefficients for (CO2 + n-CmH2m+2) with (m = 21 to 40) from supercritical fluid chromatography
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SYSNO ASEP 0162467 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Interaction second virial coefficients for (CO2 + n-CmH2m+2) with (m = 21 to 40) from supercritical fluid chromatography Author(s) Roth, Michal (UIACH-O) RID, ORCID Source Title Journal of Chemical Thermodynamics. - : Elsevier - ISSN 0021-9614
Roč. 35, č. 4 (2003), s. 667-675Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords second virial coefficient ; dilute near-critical mixture ; cubic equation of state Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/02/1093 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z4031919 - UIACH-O Annotation Partial molar volumes of 11 n-alkanes (C21H44, C22H46, C23H48, C24H50, C25H52, C27H56, C28H58, C31H64, C34H70, C36H74, and C40H82) at infinite dilution in CO2, obtained previously by supercritical fluid chromatography within T = 310.5 K to T = 431.6 K and within p = 8.7 MPa to p = 39.1 MPa, have been used to estimate the CO2(1)alkane(2) interaction second virial coefficients B12. The isothermal, high-pressure data are fitted by the PengRobinson equation of state with the van der Waals one-fluid mixing rules, and the optimised unlike-interaction parameters of the equation are used to calculate B12. The effects are discussed of the various error sources inherent in this model-dependent procedure on the resultant estimates of B12. Workplace Institute of Analytical Chemistry Contact Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Year of Publishing 2004
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