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Gas Hydrate Nucleation & Growth in Confinement and Its Application
  • Ahmad Majid,
  • Carolyn Ann Koh
Ahmad Majid
Colorado School of Mines
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Carolyn Ann Koh
Colorado School of Mines
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Abstract

Massive amounts of gas hydrates occur naturally in the pores of sediments or fractures in permafrost regions and beneath the oceans. For hydrate formation in confinement, the equilibrium condition can shift to harsher conditions, lowering the water activity, and subsequently depressing the hydrate freezing temperature at a given pressure. Conversely, the nucleation and rate of hydrate formation, as well as hydrate conversion can be increased in confinement. Therefore, reliable assessment of the hydrate distribution in nature requires accurate thermodynamic and kinetic models of hydrate formation; however, these models tend to be based upon the properties of bulk hydrates. Hydrate formation and growth promotion in confinement are potentially interesting for hydrate technological applications, such as gas separation, energy storage, and flow assurance. This paper reviews the thermodynamic and kinetic properties and their interrelations of gas hydrates in confined spaces.

Peer review status:UNDER REVIEW

18 Jun 2020Submitted to AIChE Journal
18 Jun 2020Assigned to Editor
18 Jun 2020Submission Checks Completed
24 Jun 2020Reviewer(s) Assigned