A Functionalized High-Surface-Energy Ammonium-Based Ionic Liquid: Experimental Measurement of Viscosity, Density, and Surface Tension of (2-Hydroxyethyl)ammonium Formate
The ammonium-based ionic liquid (2-hydroxyethyl)ammonium formate has been known for ease of synthesis and great solvation properties. In this work, this ionic liquid was synthesized, and its temperature-dependent density, surface tension, and viscosity were measured. Surface tension was measured by the capillary rise method using a homemade capillary apparatus in which the liquid and vapor can be brought into equilibrium. Measurements of viscosity and surface tension were performed under a water-vapor-free atmosphere. The viscosity was measured using a capillary viscometer and found to fit the Vogel Fulcher Tammann (VFT) equation, indicative of a non-Arrhenius ionic liquid. Also, the viscosity of the ionic liquid was fitted quite accurately using the relation we developed recently with the characteristic exponent = 0.166893. This ionic liquid has a rather high surface energy and low surface entropy, which can be attributed to the role of the -OH group involved. The determined surface thermodynamic properties could in part account for the good solvation properties shown by this ionic liquid.
Compounds
#
Formula
Name
1
C3H9NO3
2-hydroxyethylammonium formate
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.