Properties of symmetric 1,3-diethers based on glycerol skeletons for CO2 absorption

Glycerol‐derived solvents containing two or three distinct functional groups enabled by trifluoroethyl glycidyl ether

“…Considering these miscibility data with those from our previous works on symmetric compounds, 38,48,52 they present a broad range of solvent candidates from which to choose depending on the requirements of hydrophilcity/phobicity and oleophilicity/phobicity. Table 10 shows that the oleophilicity and hydrophilicity for glycerol derivatives, including diether alcohols, diether ketones, and triethers, can be adjusted by the selection of functional groups except a triether that simultaneously exhibits both oleophobic and hydrophobic properties.…”

“…However, it is also noted that the corresponding glycerol-derived compounds with alkyl groups are less dense (i.e., density of [E, 0, E] is 950 kgÁcm À3 and [ME, 0, ME] is 1050 kg cm À3 at 293.15 K). 48 Regardless of functional groups and their arrangement (i.e., symmetric vs. asymmetric), the density trends are in the order diether ketone > diether alcohol > triether. While the increase in density from alcohol to ketone is assumed to be the result of liquid contraction 13 brought about by H-bond breakage, the decrease in density of the triethers is not as intuitive.…”

“…TFGE was transformed into asymmetric glycerol 1,3-diether- 2) that we had synthesized and characterized in our previous works. 38,48 Densities of the five asymmetric compounds synthesized here were measured over a temperature range of 293.15-353.15 K at atmospheric pressure. These data are plotted in Figure 3.…”

“…Apart from its utilization as a reaction solvent, a new use was developed for [F, 0, F] as a physical solvent for CO 2 absorption in our previous work. 48 Moreover, [F, 0, F] itself was regarded as a reactant for the synthesis of other symmetric glycerol derivatives including ketone and triethers due to the reactivity of the hydroxy group. For this reason, [F, 0, F] was categorized as a desired product along with TFGE in green metrics evaluations.…”

Experimental and Computational Study of the Properties of Imidazole Compounds with Branched and Cycloalkyl Substituents

“…Unlike density, viscosity followed a non-linear trend. Among several empirical equations that can be used to model viscosity-temperature relationship, the Andrade Equation [41], in the form of η = a•exp•(b•T −1 ), was chosen first, for its simplicity and effectiveness in our prior work [42][43][44]. Parameters for the Andrade equation are presented in Table 6, coefficients of determination (R 2 ) for all equations derived for branched and cycloalkyl imidazoles considered in this work are >0.99 while the broad residual deviations indicated by the maximium absolute residual and SSR values call for model improvement.…”