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Thermodynamic predictions of various tetrahydrofuran and hydrogen clathrate hydrates
Authors:Timothy A Strobel  Carolyn A Koh  E Dendy Sloan  
Institution:aCenter for Hydrate Research, Chemical Engineering Department, Colorado School of Mines, Golden, CO 80401, United States
Abstract:Tetrahydrofuran (THF) is one of the most widely used analogues for gas hydrates as well as a commonly used additive for reducing the formation pressure of a given hydrate process. Hydrates are also currently being investigated as storage materials for hydrogen as well as materials for hydrogen separations. Here we present a thermodynamic model, based on the CSMGem framework, that accurately captures the phase behavior of various hydrates containing THF and hydrogen. The model uses previously regressed parameters for components other than THF and H2, and can reproduce hydrate formation conditions for a number of hydrates containing THF and/or hydrogen (simple THF, THF + CH4, THF + N2, THF + CO2, THF + H2, CH4 + H2, C2H6 + H2 and C3H8 + H2). The incorporation of THF and H2 within this model framework will serve as a valuable tool for hydrate scenarios involving either of these components.
Keywords:Hydrogen  Tetrahydrofuran (THF)  Clathrate hydrate  Phase equilibrium  Thermodynamic model
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