New tetrapropylammonium bromide-based deep eutectic solvents: Synthesis and characterizations

Carbon Dioxide Capture with Ionic Liquids and Deep Eutectic Solvents: A New Generation of Sorbents

“…On the basis of this theory, the volumetric factors are more effective than interactions between a salt and a HBD. Moreover, the distribution of the hole sizes depends on the HBD and salt type …”

“…The temperature dependency of viscosity can be explained using the Arrhenius equation, and the activation energies can be used to evaluate the strength of the intermolecular forces in the DES as well as their connection with viscosity. A higher activation energy indicates that it is more difficult for the ions to move past each other . Therefore, intermolecular interactions between ions and HBDs have a key role in DES viscosity.…”

“…The type of the salts in DESs has a strong effect on the density and volumetric properties. For example, the density of ammonium‐based DESs is lower than that of phosphonium‐based DESs with a fixed HBD, such as ethylene glycol …”

“…For example, the density of ammonium-based DESs is lower than that of phosphonium-based DESs with af ixed HBD, such as ethylene glycol. [159][160][161] The density of DESs relates to the functional groups and the chain length. For the DESs formed by HBDs with the hydroxyl groups,t heir density increases with an increasing number of hydroxyl groups.…”

Molar volume of eutectic solvents as a function of molar composition and temperature

“…Most of the previously reported models of DES molar volume are of linear form with temperature [12][13][14][15]. These simple models are specific to particular DES systems and they cannot be generalized for different DES systems.…”