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Kinetics of the absorption of carbon dioxide into aqueous ammonia solutions
Author(s) -
Yu Hesheng,
Tan Zhongchao,
Thé Jesse,
Feng Xianshe,
Croiset Eric,
Anderson William A.
Publication year - 2016
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.15296
Subject(s) - kinetics , aqueous solution , ammonia , absorption (acoustics) , chemistry , carbon dioxide , chemical kinetics , carbon fibers , analytical chemistry (journal) , inorganic chemistry , materials science , chromatography , organic chemistry , composite number , physics , composite material , quantum mechanics
Experiments were performed in a customized double stirred tank reactor to study the kinetics of CO 2 absorption into NH 3 solutions at concentrations ranging from 0.42 to 7.67 kmol·m −3 and temperatures between 273.15 and 293.15 K. The results show that the reactive absorption was first order with respect to CO 2 but fractional order (1.6–1.8) with respect to ammonia. Experimental data can be satisfactorily interpreted by a termolecular mechanism usingkNH 3T = 7.6089 ×10 8 exp ( − 4018.4 T )andkH 2 O T = 7.9161 ×10 7 exp ( − 4356.4 T ) . © 2016 American Institute of Chemical Engineers AIChE J , 62: 3673–3684, 2016