Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Effects of association with impurities in ammonia purification

Petukhov, A. N.[Anton N.], Shablykin, D. N.[Dmitry N.], Vorotyntsev, A. V.[Andrey V.], Vorotyntsev, I. V.[Ilya V.], Vorotyntsev, V. M.[Vladimir M.]
Fluid Phase Equilib. 2015, 406, 163-167
ABSTRACT
Binary systems of ammonia with impurities have been studied experimentally to obtain activity coefficients at 293.15 K for liquid impurity concentrations from 0.6 to 1613 ppm. Activity coefficients for carbon monoxide, nitrogen and oxygen in ammonia increase with increasing concentration, in contrast to their decreasing in hydrocarbons. This behavior is consistent with molecular association.
Compounds
# Formula Name
1 H3N ammonia
2 N2 nitrogen
3 O2 oxygen
4 CO carbon monoxide
5 CH4 methane
6 C2H6 ethane
7 C3H8 propane
8 C4H10 butane
9 C4H10 2-methylpropane
10 C3H6 propene
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
  • 2
  • Mole fraction - 2 ; Gas
  • Mole fraction - 2; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 6
  • POMD
  • 1
  • 3
  • Mole fraction - 3 ; Gas
  • Mole fraction - 3; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 5
  • POMD
  • 5
  • 1
  • Mole fraction - 5 ; Gas
  • Mole fraction - 5; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 7
  • POMD
  • 6
  • 1
  • Mole fraction - 6 ; Gas
  • Mole fraction - 6; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 5
  • POMD
  • 7
  • 1
  • Mole fraction - 7 ; Gas
  • Mole fraction - 7; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 4
  • POMD
  • 8
  • 1
  • Mole fraction - 8 ; Gas
  • Mole fraction - 8; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 7
  • POMD
  • 9
  • 1
  • Mole fraction - 9 ; Gas
  • Mole fraction - 9; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 5
  • POMD
  • 10
  • 1
  • Mole fraction - 10 ; Gas
  • Mole fraction - 10; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 5
  • POMD
  • 4
  • 1
  • Mole fraction - 4 ; Gas
  • Mole fraction - 4; Liquid
  • Temperature, K; Gas
  • Gas
  • Liquid
  • Chromatography
  • 7