Abstract
Assuming that gas hydrate formation from ice occurs through a diffusion mechanism, a system of equations was developed that describes the kinetics of gas hydrate formation from a spherical ice particle. This model takes into account the porous structure of the formed gas hydrate as well as the increases in particle volume due to the formation of the gas hydrate. In addition, the intrinsic kinetics of gas hydrate formation from ice is considered. In the framework of a quasi-stationary approximation, a simplified solution for the system of equations was obtained. From the comparison between the calculated and available experimental data, the temperature dependence was determined for the diffusion coefficient of methane in methane hydrate.
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