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The solubility of methane in aqueous solutions of monoethanolamine, diethanolamine and triethanolamine
Author(s) -
Carroll John J.,
Jou FangYuan,
Mather Alan E.,
Otto Frederick D.
Publication year - 1998
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450760512
Subject(s) - diethanolamine , solubility , triethanolamine , alkanolamine , methane , chemistry , aqueous solution , mole fraction , amine gas treating , inorganic chemistry , organic chemistry , analytical chemistry (journal)
Abstract The solubility of methane in 3 kmol/m 3 solutions of monoethanolamine, diethanolamine, and triethanolamine was measured from 25° to 125°C and pressures up to about 13 MPa. Measurements were also made for the solubility of methane in water at 25° to 125°C and pressures up to 18 MPa in order to confirm the accuracy of the experimental technique. It is demonstrated that methane is more soluble (in terms of mole fraction) in the amine solution than in pure water. Furthermore, the solubility is an increasing function of the size of the alkanolamine. The solubility data were modeled using a Henry's‐law approach and the results summarized in terms of salting‐in coefficients.