Influence of Carboxylate Anions on Phase Behavior of Choline Ionic Liquid Mixtures.

ABSTRACT: Mixing ionic liquids is a suitable strategy to tailor properties, e.g., to reduce melting points. The present study aims to widen the application range of low-toxic choline-based ionic liquids by studying eight binary phase diagrams of six different choline carboxylates. Five of them show eutectic points with melting points dropping by 13 to 45 °C. The eutectic mixtures of choline acetate and choline 2-methylbutarate were found to melt at 45 °C, which represents a remarkable melting point depression compared to the pure compounds with melting points of 81 (choline acetate) and 90 °C (choline 2-methylbutarate), respectively. Besides melting points, the thermal stabilities of the choline salt mixtures were investigated to define the thermal operation range for potential practical application

SUBMITTER: Elhi F 

PROVIDER: S-EPMC7180831 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature