On the dissociation of natural gas hydrates from surfactant solutions

Natural gas hydrates from different types and concentrations of surfactant solutions were produced and dissociated in a high-pressure cell. The Clausi us-Clapeyron equation was utilized to derive the enthalpy related to the ph ase transition of the gas component from dissociation data. The results ind icated that the phase change enthalpy of the nonionic surfactant solution h ydrate is higher compared to that of pure-water and anionic surfactant solu tion hydrates. Experimental results also show that surfactants do not influ ence the thermodynamic dissociation point.