Hydrogen gas hydrate—Measurements and predictions

Hydrate formation conditions were measured for gas mixtures with concentrations of hydrogen from 5 mol% to 66 mol%. The thermodynamic models were proposed to calculate hydrate formation conditions for such systems. By treating hydrogen as a hydrate former, the Kihara parameters and the interaction coefficients between hydrogen and other less volatile hydrate formers in the Ng–Robinson hydrate model were determined from the experimental data. The proposed models were applied to the predictions of hydrate formation for multicomponent systems containing hydrogen. A good agreement was reached between the predictions and the measured data.

► We measure the hydrate formation conditions for gas mixtures with concentration of hydrogen from 5 mol% to 66 mol%. ► The thermodynamic models are proposed to calculate hydrate formation conditions for such systems by treating hydrogen as a hydrate former. ► The proposed models are applied to the predictions of hydrate formation for multicomponent systems containing hydrogen. ► A good agreement is reached between the predictions and the measured data.