Earth’s Cryosphere, 2011, Vol. XV, No. 4, p. 72-74

FORMATION OF SUPERCOOLED WATER ON DISSOCIATION OF GAS HYDRATES
FROM NUCLEAR MAGNETIC RESONANCE DATA

V.A. Vlasov, A.G. Zavodovsky, M.Sh. Madygulov, A.M. Reshetnikov

Institute of Earth’s Cryosphere, Siberian Branch of the Russian Academy of Sciences, PO box 1230, Tyumen, 625000, Russia; zag-2-57@yandex.ru

Dissociation of CFC-12 (Freon-12) hydrate into gas and supercooled water at low temperatures has been discovered in a pulsed nuclear magnetic resonance (NMR) study of disperse ice. Supercooled water was investigated experimentally in terms of its quantity dynamics during dissociation. The dissociation rates in two gas hydrate samples were measured under different experimental conditions. Supercooled water was found out to crystallize on the surfaces and inside gas hydrate particles at different P–T conditions of CFC-12 hydrate dissociation.

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