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Kinetics of the reaction of pure CO 2 with N ‐methyldiethanolamine in aqueous solutions
Author(s) -
Camacho Fernando,
Sánchez Sebastián,
Pacheco Rafael,
La Rubia M. Dolores,
Sánchez Antonio
Publication year - 2009
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.20375
Subject(s) - chemistry , aqueous solution , kinetics , isothermal process , amine gas treating , thermodynamics , reaction rate constant , absorption (acoustics) , kinetic energy , analytical chemistry (journal) , organic chemistry , quantum mechanics , acoustics , physics
The process of pure carbon dioxide absorption is analyzed in aqueous solutions of N‐methyldiethanolamine (MDEA). The experiments were made in a stirred tank reactor with a plane and known interface area. The variables considered were the MDEA concentration within the range 0.1–3.0 M and the temperature in the interval 288–313 K. From the results, we deduce that the process takes place under isothermal conditions and moderately fast regime, with second‐order kinetics. We determined a reaction order of one with respect to the amine, and an expression for the kinetic constant valid throughout the entire range of temperatures and concentrations assayed ln k = 22.4 − 6243.5/T. © 2008 Wiley Periodicals, Inc. Int J Chem Kinet 41: 204–214, 2009