Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/86297
Type: Artigo de periódico
Title: Density, Viscosities, And Excess Properties For Binary Mixtures Of Sulfolane + Alcohols And Sulfolane + Glycols At Different Temperatures
Author: Mesquita F.M.R.
Feitosa F.X.
Aznar M.
De Sant'Ana H.B.
Santiago-Aguiar R.S.
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. VE 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. © 2014 American Chemical Society.
Editor: American Chemical Society
Rights: fechado
Identifier DOI: 10.1021/je500153g
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84904290128&partnerID=40&md5=a5838d0b9fc0331c52e6124e6bea37c0
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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