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Thermodynamics and kinetics studies of formation and decomposition of clathrates hydrates of methane, carbon dioxide and their mixtures using a differential heat flux calorimeter

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Title: Thermodynamics and kinetics studies of formation and decomposition of clathrates hydrates of methane, carbon dioxide and their mixtures using a differential heat flux calorimeter
Author: Besnard, Guillaume
Advisor: Kobayashi, Riki
Degree: Master of Science thesis
Abstract: A high pressure heat flux calorimeter in isobaric, temperature-ramping mode has been used to measure the solubility of pure methane, pure carbon dioxide and methane-carbon dioxide mixtures. The solubility measurements emphasize a crystallization-like process taking place during hydrate formation and show a striking divergence from Henry's Law, the frequently used calculation procedure, prior to and during hydrate formation. These measurements were further used to determine the enthalpies of solution/dissociation, and entropies change. Moreover, the hydration numbers of these compounds provide some explanations and criteria of stability of the cages of gas hydrates in the host lattice. Finally, a kinetic study confirms the crystallization process of hydrate formation and exhibits a high level of supersaturation prior to hydrate formation and also a high consumption rate during hydrate formation.
Citation: Besnard, Guillaume. (1997) "Thermodynamics and kinetics studies of formation and decomposition of clathrates hydrates of methane, carbon dioxide and their mixtures using a differential heat flux calorimeter." Masters Thesis, Rice University. http://hdl.handle.net/1911/17065.
URI: http://hdl.handle.net/1911/17065
Date: 1997

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