Gas Hydrate Phase Equilibria in the Methane + Carbon Dioxide + Water System: Experimental Measurements and Predictions of Dissociation Conditions

In this communication, we report experimental dissociation data for clathrate hydrates of methane + carbon dioxide at low, medium and high concentrations of carbon dioxide in the temperature range from 279 to 290 K and pressures up to 13 MPa. An isochoric pressure-search method was used to perform the measurements. The dissociation data generated in this work are compared with the predictions of a thermodynamic model. A discussion is made on the deviations between the experimental and predicted data.