Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

A synthetic-dynamic method for water solubility measurements in high pressure CO2 using ATR FTIR spectroscopy

Comak, G.[Gurbuz], Foltran, S.[Stephanie], Ke, J.[Jie], Perez, E.[Eduardo], Sanchez-Vicente, Y.[Yolanda], George, M. W.[Michael W.], Poliakoff, M.[Martyn]
J. Chem. Thermodyn. 2016, 93, 386-391
ABSTRACT
A new synthetic method for studying phase behaviour is described using Attenuated Total Reflection (ATR) spectroscopy. The method has been developed to provide relevant information on the solubility of water in CO2. The dew point of water has been determined at three different pressures, viz. (4.05, 5.05 and 6.03) MPa with mole fractions of water between 0.01 and 0.04. The data obtained fill the gap in the literature in these regions of pressures and temperatures and could be of high importance in the context of Carbon Capture and Storage (CCS) technology. Indeed, the presence of water in the captured CO2 could damage the pipeline used for CO2 transport. Hence, it is very important to have a fully understanding of the behaviour of the (CO2 + H2O) mixtures in wide range of temperature relevant for CCS.
Compounds
# Formula Name
1 H2O water
2 CO2 carbon dioxide
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
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • ATR infrared spectroscopy
  • 5
  • POMD
  • 2
  • 1
  • Boiling temperature at pressure P, K ; Gas
  • Pressure, kPa; Gas
  • Mole fraction - 1; Gas
  • Gas
  • Liquid
  • ATR infrared spectroscopy
  • 15