Density, Viscosities, and Excess Properties for Binary Mixtures of Sulfolane + Alcohols and Sulfolane + Glycols at Different Temperatures

Abstract

Sulfolane, alcohols, and glycols are commonly used as solvents in different industrial recovery processes. The focus of the present work is to measure volumetric (densities, ρ) and transport (dynamic viscosity, η) properties of the binary mixtures sulfolane + 2-butanol (or 2-propanol, diethylene glycol, or triethylene glycol) within a temperature range from T = 303.15 K to T = 343.15 K, at atmospheric pressure. Densities and viscosities were measured using a viscodensimeter (Anton Paar SVM 3000 Digital Oscillation U-tube). The experimental results of density and viscosity for both pure and binary systems show a decrease with increasing temperature, as expected for liquids. Excess volumes and viscosity deviations were obtained from the experimental data and fit using a Redlich−Kister type equation. V E values show a dual behavior, presenting positive and negative data, depending on the nature of the liquid mixtures, whereas Δη values are negative in the whole composition range in all systems studied. Thermal expansion coefficients were calculated using the experimental data, assuming positive and negative values.

Densities, Viscosities, and Self-Diffusion Coefficients of Ethylene Glycol Oligomers

“…108,109 (squares), Valtz et al134 (circles), Klimaszewski et al136 (triangles), Almasi137 (inverted triangles), Mesquita et al113 (diamonds), Chen et al138 (left-pointing triangles), Afzal et al60 (rightpointing triangles), and Pereira et al62 (stars) to the results of this study.…”

“…% Relative deviation (%RD) of diethylene glycol density of results from (a) Ghaedi et al (squares), Klimaszewkski et al (circles), Li et al (triangles), Wang et al (inverted triangles), Huo et al (diamonds), Cocchi et al, (left-pointing triangles), Ren et al (right-pointing triangles), Begum et al (hexagons), Bernal-Garća (stars), and Carvalho et al (plus sign) and (b) Carvalho et al (circles), Crespo et al (triangles), Klimaszewkski et al (inverted triangles), Sagdeev et al , (diamonds), Chen et al (left-pointing triangles), Mesquita et al (right-pointing triangles), Afzal et al (stars), and Pereira et al (plus sign) to the results of this study.…”

“…In this regard, it would be helpful if one could predict the physicochemical properties of polydisperse PEGs based on the analysis of their exact composition. It should be noted that even the low average molar mass PEG 200 covers oligomers from mono- to nonaethylene glycol with tetra- and pentaethylene glycol being the most prominent components. , A perusal of the literature reveals that there are numerous reports on density and viscosity for the neat lowest oligomers diethylene glycol, ,,− ,− trietheylene glycol, ,− ,,,,− ,− ,− ,− and tetraethylene glycol, ,,…”

“…Figure6. % Relative deviation (%RD) of triethylene glycol viscosity results from Carvalho et al100 (squares), Hao et al127 (circles), Qiao et al128 (triangles), Begum et al98 (inverted triangles), Guo et al132 (diamonds), Ghaedi et al23 (left-pointing triangles), Almasi137 (rightpointing triangles), Mesquita et al113 (hexagons), Chen et al138 (stars), and Pereira et al62 (plus sign) to the results of this study.…”

“…Figure 3. % Relative deviation (%RD) of triethylene glycol density of results from (a) Carvalho et al100 (squares), Carvalho et al100 (circles), Crespo et al101 (triangles), Hao et al127 (inverted triangles), Qiao et al128 (diamonds), Begum et al129 (left-pointing triangles), Guo et al132 (right-pointing triangles), and Aniya et al133 (stars) and (b) Sagdeev et al108,109 (squares), Valtz et al134 (circles), Klimaszewski et al136 (triangles), Almasi137 (inverted triangles), Mesquita et al113 (diamonds), Chen et al138 (left-pointing triangles), Afzal et al60 (rightpointing triangles), and Pereira et al62 (stars) to the results of this study.…”