کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
200782 460516 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase equilibria of methane clathrate hydrates from Grand Canonical Monte Carlo simulations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Phase equilibria of methane clathrate hydrates from Grand Canonical Monte Carlo simulations
چکیده انگلیسی


• Occupancy of cavities in the hydrate lattice determined using Grand Canonical Monte Carlo simulation.
• Simulations performed using several force fields.
• Langmuir-type adsorption isotherms fitted to simulation results.
• Clathrate hydrate phase equilibria computed from adsorption isotherms.
• Predicted phase equilibria compare favourably with literature.

The determination of conditions at which clathrate hydrates are thermodynamically stable is important in applications such as offshore gas exploitation and energy storage. Adsorbed gas molecules occupy different cavity types within the hydrate lattice and this plays a significant role in the thermodynamic stability of clathrate hydrates. The occupancy of cavities in the hydrate lattice can be studied by undertaking Grand Canonical Monte Carlo simulations. Such simulations were performed in this study for methane clathrate hydrate with several force fields. Langmuir-type adsorption isotherms were fitted to the results of the simulations. The use of a single type of adsorption site was validated for methane clathrate hydrate. The adsorption isotherms which were fitted to the results of the simulations were used to compute the clathrate hydrate phase equilibria, which compared favourably with results from the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 369, 15 May 2014, Pages 47–54
نویسندگان
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