A novel technique for hydrogen recovery from the high-pressure recycled-hydrogen gas mixtures through fondling hydrate was proposed. The systematic experimental studies were performed on the gas-hydrate equilibrium for two gas mixtures in pure water and the oxacyclopentane aqueous solution. The effect of temperature. pressure, and initial gas liquid ratio On the separation was studied. The gas-hydrate equilibrium data were obtained at pressures ranging from (10 to 12) MPa and at temperatures from (274.15 to 281.15) K. The experiments provided the fundamental data for designing the industrial process and determining the suitable operational conditions. The measured data were compared with the predictions by using the Chen-Guo hydrate thermodynamic model.