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
AbstractExcess 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.
|Journal series||Journal of Chemical Thermodynamics, ISSN 0021-9614|
|Keywords in English||1-alkynes, excess volume and enthalpy, liquid mixtures, Molecular interactions, Prigogine–Flory–Patterson theory, sulfolane|
|ASJC Classification||; ;|
|Publication indicators||= 9.0; : 2000 = 1.164; : 2006 = 1.842 (2) - 2007=1.612 (5)|
|Citation count*||9 (2013-01-30)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.