Hydrate formation conditions of hydrogen + hydrocarbon gas mixtures (H-2 CH4, H-2 + C3H8, H-2 + CH4 + C3H8, and H-2 + CH4 + C2H6 + C3H8) in pure wat
er have been measured in a sapphire cell using the "pressure search" method
. The experimental temperature range was (274-280) K, and the pressure-rang
e was (0.65-7.0) MPa. The hydrogen content in the gas mixtures varies from
22 mol % to 92 mol %.