Measurement for the Dissociation Conditions of Methane and Carbon Dioxide Hydrate in the Presence of Additive Materials. Issue 15 (2016)

• Record Type: Journal Article
• Authors: Chen, Yan-Ping; Chen, Li-Jen; Lin, Shiang-Tai; Tang, Muoi
• Is Part Of: MRS advances. Volume 1:Issue 15(2016)
• Page Start: 1013
• Page End: 1019
• Publication Date: 2016
• Subjects: additives, -- phase equilibria, -- energy storage; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2016.85
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: We report in this study the dissociation conditions for the carbon dioxide hydrate in the presence of additive materials. We measured the hydrate-water-vapor (H-Lw-V) three-phase equilibrium data using the isochoric method. Examples of these phase equilibrium data for the additive materials of 1, 3, 5-trioxane, 2, 5-dihydrofuran, 1, 3-dioxolane, and 3, 4-dihydro-2H-pyran are presented. The experimental pressure range is from 1.6 to 3.3 MPa, and the concentration of each additive is at 10 wt%. The experimental results indicate that cyclic ethers of 1, 3, 5-trioxane, 2, 5-dihydrofuran, and 1, 3-dioxolane promote the formation of carbon dioxide hydrate. Their promotion effects at a given pressure are up to 5 K, 6.9 K, and 4.2 K, respectively, The additive material of 3, 4-dihydro-2H-pyran, however, shows the inhibitor behavior. The average inhibition effect is about 1.3 K at a given pressure.