HYDRATES OF ORGANIC COMPOUNDS - VIII. THE EFFECT OF CARBOXYLATE ANIONS ON THE FORMATION OF CLATHRATE HYDRATES OF TETRABUTYLAMMONIUM CARBOXYLATES.

Article abstract of DOI:10.1246/bcsj.57.171

In this study, from the solid-liquid phase diagrams for 19 binary mixtures of tetrabutylammonium carboxylate-water, the effect of the shape and/or length of the alkyl group of a carboxylate anion on the stability (i. e. , melting point) and the crystal structure (i. e. , hydration number) of their clathrate hydrates has been systematically examined. These fundamental data would also offer a guiding principle, for example, for highly selective separation of a specific carboxylate anion from an aqueous solution containing several kinds of carboxylate anions by means of the formation of a mixed clathrate hydrate of tetrabutylammonium carboxylates.