Authors: Sanggono Adisasmito, Robert J. Frank III, and E. Dendy Sloan Jr.
Three-phase equilibrium conditions of hydrates (water-rich liquid, hydrate, and vapor) of carbon dioxide and methane binary mixtures were investigated in the temperature range of 273-288 K and the pressure range of 1.2-11.0 MPa. The vapor-phase concentrations were measured by a gas chromatograph. The results obtained were in good agreement with previous measurements done by researchers at the University of Michigan who had calculated the carbon dioxide concentration In the vapor phase. The data obtained in this work did not show unusual hydrate phenomena, as reported in a more recent publication by researchers in Hungary.