ABSTRACT

Physicochemical studies on the effect of protic ionic liquid (PIL) on monomer unit of cellulose are needed to understand the structural interactions taking place between carbohydrate polymers and ILs. Therefore, we have studied the volume and enthalpy of dilution of D(+)-glucose and D(+)-xylose in water and in (0.10, 0.15, 0.20, and 0.25) mol kg 1 aqueous solutions of newly synthesized N-methyl-2-pyrrolidonium formate; [NMP][For] and N-methyl-2-pyrrolidonium propionate; [NMP][Pro] at T = (288.15 - 318.15) K. Further, nuclear magnetic resonance spectroscopy (NMR) has also been employed to understand the nature of interactions occurring in ternary solutions (PIL + water + monosaccharides). The dominance of hydrophobic type of interactions between monosaccharides and PILs in aqueous solutions has been observed. The results obtained from thermophysical and spectroscopic techniques complement each other and can be used to understand key factors determining the cellulose dissolution process.

Compounds

#	Formula	Name
1	C5H10O5	D-xylose
2	C6H12O6	D-glucose
3	C6H11NO3	N-methyl-2-oxopyrrolidinium formate
4	C8H15NO3	N-methyl-2-oxopyrrolidinium propionate
5	H2O	water

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	4
POMD	2 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	32
POMD	2 5	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid	Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	4
POMD	2 5 3	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	128
POMD	2 5 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid	Solvent: Molality, mol/kg - 3; Liquid Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	4
POMD	2 5 4	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 4; Liquid Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	128
POMD	2 5 4	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid	Solvent: Molality, mol/kg - 4; Liquid Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	4
POMD	1 5 3	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 3; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	140
POMD	1 5 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 3; Liquid	Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	8
POMD	1 5 4	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 4; Liquid Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	112
POMD	1 5 4	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid	Solvent: Molality, mol/kg - 4; Liquid Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	4
POMD	5 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	5 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	1 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	28
POMD	1 5	Molar enthalpy of dilution, kJ/mol ; Liquid	Temperature, K; Liquid	Initial molality of solute, mol/kg; Liquid Pressure, kPa; Liquid Final molality of solute, mol/kg; Liquid	Liquid	isothermal titration calorimetry	4

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solvation behavior of monosaccharides in aqueous protic ionic liquid solutions: Volumetric, calorimetric and NMR spectroscopic studies

Singh, V.[Vickramjeet], Panda, S.[Somenath], Kaur, H.[Harjinder], Banipal, P. K.[Parampaul K.], Gardas, R. L.[Ramesh L.], Banipal, T. S.[Tarlok S.]

ABSTRACT