Abstract
The kinetics of the formation of propane hydrates with the CsII crystal structure as one of the most common structures of hydrates of hydrocarbons, in frozen aqueous solutions was studied. The rate of the water transfer to propane hydrate in frozen aqueous poly(vinyl alcohol) solutions is many times higher than in common ice. The water transition to the liquid state upon hydrate formation in the course of ice melting in frozen aqueous poly(vinyl alcohol) solutions was studied by a NMR method. Microcrystals of propane hydrates formed in frozen aqueous poly(vinyl alcohol) solutions in the course of ice melting are smaller in size than the propane hydrate crystals formed in frozen water under equal conditions of hydrate formation.
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