Publisher : Korea Institute of Ocean Science & Technology
DOI : 10.4217/OPR.2004.26.3.515
Title & Authors
Formation and Dissociation Processes of Gas Hydrate Composed of Methane and Carbon Dioxide below Freezing Hachikubo, Akihiro; Yamada, Koutarou; Miura, Taku; Hyakutake, Kinji; Abe, Kiyoshi; Shoji, Hitoshi;
The processes of formation and dissociation of gas hydrates were investigated by monitoring pressure and temperature variations in a pressure cell in order to understand the kinetic behavior of gas hydrate and the controlling factors fur the phase transition of gas hydrate below freezing. Gas hydrates were made kom guest gases (, and their mixed-gas) and fine ice powder. We found that formation and dissociation speeds of gas hydrates were not controlled by temperature and pressure conditions alone. The results of this study suggested that pressure levels at the formation of mixed-gas hydrate determine the transient equilibrium pressure itself.
gas hydrate;methane;carbon dioxide;kinetics;quasi-liquid layer;self-preservation effect;
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