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Dynamics of Reformation and Replacement of CO 2 and CH 4 Gas Hydrates
Author(s) -
KOMAI TAKESHI,
YAMAMOTO YOSHITAKA,
OHGA KOTARO
Publication year - 2000
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2000.tb06781.x
Subject(s) - hydrate , clathrate hydrate , chemistry , aqueous solution , gas phase , thermodynamics , mineralogy , inorganic chemistry , analytical chemistry (journal) , chemical engineering , chromatography , organic chemistry , physics , engineering
A bstract : The dynamics of reformation and replacement of gas hydrates were studied under nonequilibrium conditions. It was found that the reformation of gas hydrates is largely affected by the state of the gas‐water system and the restarting temperature. This suggests that the effects are caused by changes in the structure of the aqueous solution at a molecular level. Pure samples of CH 4 gas hydrate were synthesized from ice crystals and the dissociated solution using the reformation method. Replacement of CO 2 gas hydrate is achieved within a short duration in the solid‐phase sample of CH 4 gas hydrate, if the pressure and temperature is precisely controlled in a pressure vessel.