Excess molar volumes and enthalpies of (1-hexyne, or 1-heptyne, or 1-octyne + sulfolane) at the temperature 303.15 K

Trevor M. Letcher , W.C. Moollan , J.A. Nevines , Urszula Domańska-Żelazna

Abstract

Excess molar volumes VmEand excess molar enthalpiesHmE were measured as a function of mole fraction atT = 303.15 K and atmospheric pressure for each of the mixtures \1-heptyne, or 1-octyne + tetramethylene sulfone (sulfolane)\. Excess molar volumes were also measured for mixtures of (1-hexyne + sulfolane). The results were compared in an attempt to investigate the interactions between the highly polar sulfolane molecule and the terminal proton of the alkynes. TheHmE results were discussed in terms of the NRTL and Wilson models and were predicted from equimolar values of VmEby the Prigogine–Flory–Patterson (PFP) theory with a free volume contribution obtained from Flory’s equation of state model. The results were compared with the modified UNIFAC model. The description of HmEby the PFP theory was better than the prediction by the modified UNIFAC.
Author Trevor M. Letcher
Trevor M. Letcher,,
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, W.C. Moollan
W.C. Moollan,,
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, J.A. Nevines
J.A. Nevines,,
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, Urszula Domańska-Żelazna (FC / DPC)
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2000
Vol32
No5
Pages579-586
Keywords in English1-alkynes, excess volume and enthalpy, liquid mixtures, Molecular interactions, Prigogine–Flory–Patterson theory, sulfolane
ASJC Classification1606 Physical and Theoretical Chemistry; 2500 General Materials Science; 3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.1006/jcht.1999.0618
URL http://www.sciencedirect.com/science/article/pii/S0021961499906183
Languageen angielski
Score (nominal)35
Score sourcejournalList
Publication indicators GS Citations = 9.0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 1.164; WoS Impact Factor: 2006 = 1.842 (2) - 2007=1.612 (5)
Citation count*9 (2013-01-30)
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