Hydrate Formation of CO₂-Rich Binary and Quaternary Gas Mixtures in Aqueous Sodium Chloride Solutions

Hydrate formation data of CO 2 -rich mixtures, three binaries (CO 2 + CH 4, CO 2 + C 2 H 6 and CO 2 + N 2 ) and one quaternary (CO 2 + CH 4 + C 2 H 6 + N 2 ), in water and aqueous sodium chloride solutions were measured. The measurements were carried out in a transparent sapphire cell by applying an isothermal pressure search method in the temperature range 264 K to 284 K and the pressure range 0.5 MPa to 5.0 MPa.