Open AccessTHERMODYNAMIC PROPERTIES OF GAS HYDRATE COMPOUNDS
Author(s) -
Yulia S. Vorozhtsova,
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Alexander V. Melent'ev,
Alexander A. Uspensky,
Dmitry V. Kremnev,
Mikhail A. Radin,
A. A. Slobodov,
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Publication year - 2021
Publication title -
izvestiâ sankt-peterburgskogo gosudarstvennogo tehnologičeskogo instituta (tehničeskogo universiteta)
Language(s) - English
Resource type - Journals
ISSN - 1998-9849
DOI - 10.36807/1998-9849-2021-59-85-12-20
Subject(s) - clathrate hydrate , isobaric process , thermodynamics , heat capacity , hydrate , chemistry , enthalpy , thermodynamic databases for pure substances , gibbs free energy , thermodynamic process , material properties , organic chemistry , physics
The most stable forms (compositions) and thermodynamic characteristics of gas hydrates СН4•6Н2О, С2Н6•8Н2О, С3Н8•17Н2О, i-С4Н10•17Н2О, СO2•6Н2О, O2•6Н2О, H2S•6Н2О, N2•6Н2О, Ar•6Н2О were defined based on the analysis of literature data and own research on the composition and thermodynamic properties of gas hydrate compounds. Correlation dependences of thermodynamic characteristics of gas hydrates depending on the composition were graphed. All the main thermodynamic characteristics of gas hydrates – standard enthalpies and Gibbs energies of formation, standard entropies, temperature dependences of isobaric heat capacity, enthalpy and entropy of dissociation (formation) of gas hydrates into hydrate-forming gas and water (ice) – were determined based on the results of the examination, assessment, calculation and data agreement