Excess volumes and viscosity of water—sulfolane mixtures at 30, 40 and 50°C

Density, viscosity and thermodynamic activation for viscous flow of water+sulfolane

“…Exactly similar type of variation in density curves was observed by Sacco et al [8]. Densities, (kg m À3 ), viscosities, (kg m À1 s À1 ), and free energies of activation for viscous flow, ÁG 6 ¼ (kJ mol À1 ), have been fitted to the general polynomial equation of the form…”

“…The freezing point of sulfolane (SFL) ranges between 25 and 27 C and its boiling point is 285 C. It is completely miscible with water at the studied temperatures. Yu et al [7] reported the excess volumes at 298.15 K, Sacco et al [8] on excess volumes and viscosity at 30, 40 and 50 C, Mcdonald et al [9] on the influence of a small addition of SFL on the temperature of maximum density of water and Benoit and Choux [10] on the heat of mixing and vapor pressure of SFL þ water system (W). Here we are reporting the density, excess molar volume, viscosity and thermodynamic properties of viscous flow of the system, SFL þ W, for the entire range of concentration at temperatures from 303.15 to 323.15 K, with an interval of 5 K. Recently we have also reported the volumetric, viscometric and thermodynamic properties of viscous flow of aqueous solutions of protic and aprotic solvents, such as alcohols [11][12][13], diols [14][15][16], acetone [17], amines and diamines [18][19][20][21][22] and amides [23], the results of which are in some respects similar to those of the present system.…”

Thermodynamic modeling of CO2 and H2S solubilities in aqueous DIPA solution, aqueous sulfolane–DIPA solution, and aqueous sulfolane–MDEA solution with electrolyte NRTL model

“…In addition, Fig. 6 shows the comparison between the experimental heat capacity data of H 2 O-sulfolane system from Sacco et al [35] and the model predictions. The predictions match the data very well.…”

Heat capacity, thermal conductivity and thermal diffusivity of aqueous sulfolane solutions

“…Sacco et al [3] reported the experimental densities and viscosities of water + sulfolane mixtures over the whole mole fraction range at temperatures 303.15 K, 313.15 K, and 323.15 K. Yu et al [4] reported the densities of water + sulfolane as well as water + tetraethylene glycol and benzene + tetraethylene glycol mixtures over the entire concentration range at 298.15 K and atmospheric pressure by using an oscillating tube densimeter. Saleh et al [5] reported the atmospheric pressure densities and viscosities of water + sulfolane mixtures in the entire composition range at temperatures ranging from (303.15 to 323.15) K. Steele et al [6] reported heat capacity, vapor pressure, and density along the saturation line, measurements for cyclohexane-1-one, 1,2-dichloro-propane, 1,4-ditert-butylbenzene, (±)-2-ethylhexanoic, 2-(methylamino)ethanol, perfluoro-n-heptane, and sulfolane.…”