Feasibility of –THF– clathrate hydrates for hydrogen storage applications

Hydrogen storage capacity of hydrogen clathrate hydrates H 2 –THF– H 2 O was directly measured using gravimetric method. The amount of hydrogen stored in a bulk piece of ice was below 0.1 wt % even after prolonged exposure to hydrogen at 150 bar . It is confirmed that fine dispersion of material is required to improve kinetics of hydrogen uptake. To achieve a fine dispersion of ice grains, it is proposed to use rather common light framework materials with size of pore sizes of about 200 – 300 μ m as a support media. The samples dispersed in foamed polyurethane showed measurable hydrogen uptake at 135 bar H 2 pressure and release. However, the amount of stored hydrogen was found maximum on the level of 0.2 wt % .