Apparent molar volume and modeling of volumetric properties of ionic liquid aqueous solutions 1-butyl-3-metilmidazolium chloride [bmim+][cl-] at various temperatures

Densities of the aqueous solutions of ionic liquid 1-butyl-3 metilmidazolium chloride [Bmim+][Cl-] were determined using a vibrating tube densitometer Anton Paar DMA 5000 at a temperature range between (283.15 - 218.15) K. The apparent molar volumes Vf of aqueous chloride1-butyl-3-methylimidazolium were calculated and adjusted to the Pitzer ion interaction model, obtaining the limiting apparent molar volumes Vf and Pitzer volumetric parameters b(O)MVX,b(1)MVX, CVMX at temperatures of 283.15, 288.15, 293.15, 298.15, 303.15, 313.15 and 318.15K, proving that this model adequately represents the experimental volumetric data below an ionic strength of 0.6018 mol / kg. Finally the limiting apparent molar expansibilities fOE were calculated from the limiting apparent molar volumes at various temperatures and the results are discussed in terms of the interactions occurring in solution.

• Autores: Páez-Meza, Manuel; Pérez-Sierra, Omar; Cuello-Delgado, Yeris
• Tipo de recurso: Article of journal
• Fecha de publicación: 2014
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/48939
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/48939; http://bdigital.unal.edu.co/42396/; http://bdigital.unal.edu.co/42396/3/5970
• Palabra clave: apparent molar volume; Pitzer parameters; density; limiting expansibilities; ionic liquid
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional