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Kinetics on the dissolution of CO 2 into water from the surface of CO 2 hydrate at high pressure
Author(s) -
Shindo Yuji,
Fujioka Yuichi,
Takeuchi Kazuhisa,
Komiyama Hiroshi
Publication year - 1995
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550270607
Subject(s) - chemistry , dissolution , hydrate , kinetics , clathrate hydrate , chemical engineering , surface pressure , high pressure , thermodynamics , inorganic chemistry , organic chemistry , geology , physics , oceanography , quantum mechanics , engineering
Kinetic study on the dissolution of CO 2 from the surface of a liquid CO 2 droplet in water was conducted, and a mechanism of the decay of CO 2 hydrate was proposed. The model was applied to the experimental data which showed that the radius of liquid CO 2 droplets in water reduced linearly with time. It was proved that the dissolution rate of CO 2 into water is dominated by the decay of CO 2 hydrate on the surface of the droplet. The rate constant of the decay of CO 2 hydrate was estimated to be 1.25 × 10 −6 m s −1 . From a viewpoint of liquid CO 2 disposal in the deep ocean, it is predicted that the thin membrane of CO 2 hydrate at the interface between seawater and liquid CO 2 will control the dissolution of CO 2 into seawater. © 1995 John Wiley & Sons, Inc.