Isotope effects on vapor phase 2nd virial coefficients

• Autorzy: Van Hook W. , Rebelo L. , Wolfsberg M.
• Konferencja: Proceedings of the International Conference “2001 an Isotope Odyssey: New Application for a New Millenium", June 24-29, 2001, Zakopane, Poland
• Języki publikacji: EN

Abstrakty

EN

Vapor phase 2nd virial coefficient isotope effects (VCIE's) are interpreted. A useful correlation is developed between -Delta(Beta-bo)/(Beta-bo) = (-VCIE) and the reference condensed phase reduced isotopic partition function ratio [ln(fc/fg)]*. B is the second virial coefficient, bo = 2pi sigma3/3, sigma is the Lennard-Jones size parameter, and Delta is an isotopic difference, light-heavy. [ln(fc/fg)]* can be obtained from vapor pressure isotope effects for T/TCRITICAL < 0.7. Also (-VCIE) = ln(fp/fg 2), where ln(fp/fg 2) is the reduced isotopic partition function ratio describing the equilibrium between monomers and interacting pairs. At temperatures well removed from crossovers in ln(fp/fg 2) or [ln(fc/fg)]*, ln(fp/fg 2) = (0.4š0.2) [ln(fc/fg)]*.

Słowa kluczowe

EN

isotope effects; Lennard-Jones potential; reduced partition function ratio; vapor phase; vapor pressure isotopic difference; virial coefficients

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2002
• Tom: Vol. 47,suppl.1
• Strony: 47--51
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Van Hook W.

• Chemistry Department, University of Tennessee, Knoxville TN 37996-1600, USA, Tel.: [phone], Fax: [phone]

autor

Rebelo L.

• Instituto de Tecnologia Químicae Biológica, UNL, Apartado 127, 2780-901 Oeiras, Portugal

autor

Wolfsberg M.

• Chemistry Department, University of California Irvine, Irvine CA 92697-2025, USA

Bibliografia

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