Diffusion coefficients of aqueous ionic liquid solutions at infinite dilution determined from electrolytic conductivity measurements

作者：Soriano Allan N; Agapito Arjay M; Lagumbay Loui John Lee I; Caparanga Alvin R; Li Meng Hui^*

来源：Journal of the Taiwan Institute of Chemical Engineers, 2011, 42(2): 258-264.

DOI：10.1016/j.jtice.2010.06.003

• Diffusion coefficient
• Electrolytic conductivity
• Ionic liquid
• Nernst-Einstein equation
• Nernst-Haskell equation

In this work, the molar conductivities of aqueous solutions of the ionic liquids abbreviated as [Bdmim][BE(4)], [Bdmim][PF(6)], [Bmim][Br], and [Bmim][CI] are reported. Such data were determined from the electrolytic conductivities of the systems, which were measured at different concentrations (dilute region) and temperatures (from 303.15 to 323.15 K). From these data, the infinite dilution diffusion coefficients of the ionic liquids and ionic diffusion coefficients were estimated using the Nernst-Haskell equation. Another theoretical equation, the Nernst-Einstein equation, was, likewise, used to determine the hydrodynamic radii of the considered ions in this work.

• 出版日期2011-3