Bishnoi, Prithwi R.Vysniauskas, Anthony2005-07-212005-07-211980Vysniauskas, A. (1980). A kinetic study of methane hydrate formation (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/22214NL Number: 51328http://hdl.handle.net/1880/22099Bibliography: p. 78-80.Gas hydrates are crystalline compounds of gas and water molecules which are thermodynamically stable at elevated pressures and low temperatures. Their formation is the result of the hydrogen bonding properties of water molecules combined with the van der Waals forces of interaction between "guest" solute and "host" water molecules. Interests in gas hydrates, in the past, were focused mainly on establishing the thermodynamic conditions for their formation with very little attention being given to the kinetics of their formation. In the present investigation, the kinetics of methane hydrate formation are studied using a semibatch stirred tank reactor. The temperatures studied in the experiments are 274.2, 276.5, 278.7, 281.0, and 284.0 Kover a pressure ranging from 3 MPa to 10 MPa. The results reveal that the formation kinetics are a function of the surface area of the gas-water interface, temperature, pressure and degree of supercooling. A plausible mechanism describing the formation of gas hydrates is proposed. The controlling mechanism is suggested to involve the interaction of molecules of water monomers with the parent water cluster and the hydrate forming gas molecules. On the basis of the proposed mechanism, a semi-empirical reaction rate model is formulated and correlated with respect to the obtained experimental data. The resultant expression shows a good fit with the data over the entire range studied. The form of the rate expression is anticipated to apply for other gas hydrates as well.xii, 258 leaves : ill. ; 30 cm.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.TP 350 V96 1980 FicheGas, Natural - HydratesMethane hydratedoctoral thesis10.11575/PRISM/22214TP 350 V96 1980 Fiche