title: First determination of volume changes and enthalpies of the high-pressure decomposition reaction of the structure H methane hydrate to the cubic structure I methane hydrate and fluid methane.
abstract: Pressure-temperature (P-T) conditions of the decomposition reaction of the structure H high-pressure methane hydrate to the cubic structure I methane hydrate and fluid methane were studied with a piston-cylinder apparatus at room temperature. For the first time, volume changes accompanying this reaction were determined. With the use of the Clausius-Clapeyron equation the enthalpies of the decomposition reaction of the structure H high-pressure methane hydrate to the cubic structure I methane hydrate and fluid methane have been calculated.
authors.affiliation: Nikolaev Institute of Inorganic Chemistry SB RAS, Akad. Lavrentieva ave., 3, Novosibirsk, 630090, Russian Federation.
authors.forename: Andrey G
authors.initials: AG
authors.lastname: Ogienko
authors.forename: Marek
authors.initials: M
authors.lastname: Tkacz
authors.forename: Andrey Yu
authors.initials: AY
authors.lastname: Manakov
authors.forename: Janusz
authors.initials: J
authors.lastname: Lipkowski