ABSTRACT

The systems {methylpiperidine water} show partial miscibility that depends on the nature of the amine isomer. A thermodynamic analysis of these systems requires knowledge of excess properties of methylpiperidine isomers with water. Excess molar enthalpies were measured at pressure 0.5 MPa and temperatures from (303.15 to 338.15) K and from (308.15 to 328.15) K for 2-methylpiperidine and N-methylpiperidine, respectively. Specific heat capacities of pure and aqueous solutions of both methylpiperidine isomers were determined at 0.1 MPa and temperatures from (283.15 to 333.15) K.

Compounds

#	Formula	Name
1	C6H13N	2-methylpiperidine
2	C6H13N	N-methylpiperidine
3	C8H18	octane
4	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	1	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Large sample (1 g) DSC	11
POMD	2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Large sample (1 g) DSC	11
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Flow calorimetry	11
POMD	1 4	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Flow calorimetry	107
POMD	1 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Large sample (1 g) DSC	55
POMD	2 4	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Flow calorimetry	62
POMD	2 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Large sample (1 g) DSC	65

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Excess Molar Enthalpies and Heat Capacities of {2-Methylpiperidine Water} and {N-Methylpiperidine Water} Systems of Low to Moderate Amine Compositions

Coulier, Y.[Yohann], Ballerat-Busserolles, K.[Karine], Mesones, J.[Javier], Lowe, A.[Alexander], Coxam, J.-Y.[Jean-Yves]

ABSTRACT