期刊
FLUID PHASE EQUILIBRIA
卷 303, 期 1, 页码 76-79出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2011.01.011
关键词
Clathrate hydrate; Gas hydrate; Carbon dioxide; Acetone; Phase equilibria
Equilibrium conditions of clathrate hydrates formed from carbon dioxide and aqueous acetone solutions were experimentally measured at temperatures between 269.2 and 281.4 K and pressures up to 3.98 MPa. The acetone concentrations in solutions were investigated from 0.04 to 0.40 mass fractions. The experimental results suggested a transition in hydrate structure from structure I to another structure for acetone solutions between 0.04 and 0.12 mass fractions of acetone. The hydrate structure was suggested to be structure II which was the most stable with a 0.16 mass fraction acetone solution. For more than 0.16 mass fraction of acetone, the equilibrium conditions of the hydrate were shifted to lower temperatures as acetone concentrations increased. (C) 2011 Elsevier B.V. All rights reserved.
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