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Energies 2012, 5(4), 925-937; doi:10.3390/en5040925

Characteristics of CO2 Hydrate Formation and Dissociation in Glass Beads and Silica Gel

Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
China National Offshore Oil Corporation Research Center, Beijing 100027, China
Author to whom correspondence should be addressed.
Received: 9 February 2012 / Revised: 21 March 2012 / Accepted: 6 April 2012 / Published: 16 April 2012
(This article belongs to the Special Issue Natural Gas Hydrate 2011)
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CO2 hydrate formation and dissociation is crucial for hydrate-based CO2 capture and storage. Experimental and calculated phase equilibrium conditions of carbon dioxide (CO2) hydrate in porous medium were investigated in this study. Glass beads were used to form the porous medium. The experimental data were generated using a graphical method. The results indicated the decrease of pore size resulted in the increase of the equilibrium pressure of CO2 hydrate. Magnetic resonance imaging (MRI) was used to investigate the priority formation site of CO2 hydrate in different porous media, and the results showed that the hydrate form firstly in BZ-02 glass beads under the same pressure and temperature. An improved model was used to predict CO2 hydrate equilibrium conditions, and the predictions showed good agreement with experimental measurements.
Keywords: CO2 hydrate; porous medium; equilibrium condition CO2 hydrate; porous medium; equilibrium condition
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yang, M.; Song, Y.; Ruan, X.; Liu, Y.; Zhao, J.; Li, Q. Characteristics of CO2 Hydrate Formation and Dissociation in Glass Beads and Silica Gel. Energies 2012, 5, 925-937.

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