Density and refractive index measurements of transition-temperature mixture (deep eutectic analogues) based on potassium carbonate with dual hydrogen bond donors for CO 2 capture

摘要

Highlights?New potassium carbonate-based TTTMs were prepared with dual HBDs.?As the temperature increased the density and refractive index decreased.?TTMs with higher amount of HBD had the lower density and refractive index values.?As the molecular weight of TTMs decreased the density and refractive index decreased.?TTMs with GL in their structures had the higher density refractive index values.AbstractThe transition-temperature mixture (TTM) is a new type of solvent and is known as a tuneable solvent similar to deep eutectic solvent (DES). The new type of solvent called ternary transition-temperature mixture (TTTM) was prepared to use for CO2capture purposes. In this work, TTMs and TTTMs were prepared with potassium carbonate (PC) as a hydrogen bond acceptor (HBA) and three hydrogen bo