ABSTRACT

The molar heat capacities, CP, of two new potential polyamine CO2 absorbents: diethylenetriamine (DETA) and 3-(methylamino)propylamine (MAPA), their aqueous binaries, and aqueous ternaries containing piperazine (PZ) were measured at temperatures from 303.15 K to 353.15 K. Measurements were performed at atmospheric pressure by heat flow differential scanning calorimetry. A linear relation suitable represented the temperature dependence of the CP of the pure amines. The excess molar heat capacities, CPE, of the binary solutions were investigated, and the data were represented as function of temperature and composition using a Redlich Kister- type equation. The molar heat capacities, CP, of two new potential polyamine CO2 absorbents: diethylenetriamine (DETA) and 3-(methylamino)propylamine (MAPA), their aqueous binaries, and aqueous ternaries containing piperazine (PZ) were measured at temperatures from 303.15 K to 353.15 K. Measurements were performed at atmospheric pressure by heat flow differential scanning calorimetry. A linear relation suitable represented the temperature dependence of the CP of the pure amines. The excess molar heat capacities, CPE, of the binary solutions were investigated, and the data

Compounds

#	Formula	Name
1	C4H13N3	di(2-aminoethyl)amine
2	C4H10N2	piperazine
3	C4H12N2	N-methyl-1,3-diaminopropane
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	Small sample (50 mg) DSC	11
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	11
POMD	1 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	88
POMD	3 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	66
POMD	2 1 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mass fraction - 1; Liquid Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33
POMD	2 3 4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid Mass fraction - 3; Liquid	Mass fraction - 4; Liquid Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	33

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Molar heat capacities of diethylenetriamine and 3-(methylamino)propylamine, their aqueous binaries, and aqueous ternaries with piperazine

Lin, S.-Y.[Shu-Yu], Leron, R. B.[Rhoda B.], Li, M. -H.[Meng-Hui]

ABSTRACT