Water-carbon dioxide solid phase equilibria at pressures above 4 GPa

Layering Behavior and Axial Phase Equilibria of Pure Water and Water + Carbon Dioxide Inside Single Wall Carbon Nanotubes

We have studied the phase equilibrium and layering behavior of the liquid phase in water and water + CO2 systems inside single wall carbon nanotubes. The system containing pure water was examined at temperatures between 274 and 500 K. At low temperatures and close to the wall of the nanotube, the formation of layers enclosing the liquid phase was observed. Upon addition of CO2, gas−liquid equil...

Water-carbon dioxide mixtures at high temperatures and pressures as studied by infrared and Raman spectroscopies

The state of aggregation of water dissolved in supercritical carbon dioxide has been investigated under isobaric heating (T=40-340°C, P=250 bar) using infrared absorption and Raman scattering spectroscopies. Quantitative analysis of experimental spectra has shown that below 100°C, water exists only in its monomeric form (solitary water surrounded by CO2 molecules) whereas H-bonded species, name...

Phase Equilibria of the Ternary System Water + Phosphoric Acid + 1-Nonanol at Different Temperatures

The purpose of this reaserch is to measure the phase equilibrium data of the ternary system (water + phosphoric acid + 1-nonanol) at different temperatures. Experimental solubility curves and tie-line points for the system were obtained at T = 298.2, 308.2 and 318.2 K and ambient pressure. The binodal curve data were detected by the cloud point method. The mass fractions of each layer ...

A New Molecular Solid Phase of Carbon Dioxide at High Pressure and Temperature

Structure of liquid iron at pressures up to 58 GPa.

We report structural data on liquid iron at pressures up to 58 GPa measured by x-ray scattering in a laser heated diamond anvil cell. The determined structure factor preserves essentially the same shape along the melting curve. Our data demonstrate that liquid iron at high pressures is a close-packed hard-sphere liquid. The results place important constraints on the thermodynamic and transport ...