Viscosities of Acetate or Chloride-Based Ionic Liquids and Some of Their Mixtures with Water or Other Common Solvents

Abstract

For the temperature range (80 to 120) °C, viscosity data are reported for imidazolium-based ionic liquids 1. Acetate-based ionic liquids have considerably lower viscosities than the corresponding chloride-based ILs. At 25 °C, viscosity data are reported for binary mixtures of [Bmim][Ac] with diluents water, acetonitrile, dimethylformamide (DMF), and ethylene glycol. Even a small concentration of diluent very much reduces the viscosity of an ionic liquid.

New method based on the UNIFAC-VISCO model for the estimation of dynamic viscosity of (ionic liquid + molecular solvent) binary mixtures

“…Nevertheless, as shown in Figure 2, a correlated data point for the ( and 485 mPa·s [71]. As reported in our previous paper [14], a viscosity dataset [96] was recommended through the gnostic analysis of five viscosity datasets [71,[93][94][95][96] for [14].…”

Lignin Extraction from Coconut Shell Using Aprotic Ionic Liquids

“…Acetatebased ILs have been found to have low viscosities, low melting points, low toxicity, and are less corrosive than chloride-based ILs (Fendt et al 2010). Previous studies also used acetate ions as a choice for the IL anion to dissolve lignocellulosic biomass (Swatloski et al 2002;Stöcker 2008;Cobb et al 2011;Li et al 2011).…”

Are Ionic Liquids Suitable as New Components in Working Mixtures for Absorption Heat Transformers?

“…This may enlarge the AHT size (exchange area) and increase the power required for the pumping process [63]. Nevertheless, various publications [26,31,[33][34][35] stated that viscosity of ILs sharply decreases when temperature increases and/or ILs are mixed with water. Taking into account that AHT has a high generator and absorber temperature (between 80 and 150°C), the viscosity of the {H 2 O + ILs} should not be a limitation for their use as absorbents in AHT [36].…”