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Carbon monoxide clathrate hydrates: Equilibrium data and thermodynamic modeling
Author(s) -
Mohammadi Amir H.,
Anderson Ross,
Tohidi Bahman
Publication year - 2005
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10526
Subject(s) - clathrate hydrate , flue gas , propane , carbon monoxide , chemistry , thermodynamics , hydrate , carbon fibers , organic chemistry , materials science , composite number , composite material , physics , catalysis
Abstract Carbon monoxide occurs in abundance throughout the cosmos, potentially in clathrate form, whereas on Earth, it forms a notable constituent of industrial flue gases. It has been proposed that hydrate technology could be used in CO 2 separation from flue gases, and in subsea flue gas CO 2 disposal. This—and the likely widespread occurrence of CO clathrates in the cosmos—means it is important that the phase behavior of CO hydrates is known. Here, we present experimental H‐L‐V (hydrate–liquid–vapor) equilibrium data for CO, COCO 2 , and COC 3 H 8 (propane) clathrate hydrates. Data were generated by a reliable step‐heating technique validated using measured data for CO 2 and CH 4 hydrates. Data for CO and COC 3 H 8 clathrates have been used in the optimization of Kihara potential parameters for CO, reported here, facilitating the extension of a thermodynamic model to the prediction of CO hydrate equilibria. Model predictions are validated against independent experimental data for COCO 2 (structure I) systems, with good agreement being observed. © 2005 American Institute of Chemical Engineers AIChE J, 2005