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AuthorBenamor, Abdelbaki
AuthorAl-Marri, Mohammed Jaber
AuthorKhraisheh, Majeda
AuthorNasser, Mustafa S.
AuthorTontiwachwuthikul, Paitoon
Available date2023-02-02T04:34:11Z
Publication Date2016
Publication NameJournal of Natural Gas Science and Engineering
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.jngse.2016.04.063
URIhttp://hdl.handle.net/10576/39375
AbstractCarbon dioxide managements and its association with global worming remains a major concern among governments and the scientific community, with novel, energy efficient and more affordable technologies topping the research agendas. Despite the importance of amino acids, their use as reaction promoters in combination with alkanolamines has been overlooked by researchers. Here, stopped-flow technique was used for the first time to measure the pseudo-first-order reaction kinetics of CO2 with various aqueous mixtures of N-methyldiethanolamine (MDEA) and glycine (Gly). The experiments were performed at a temperature range from 293 to 313 K and a total amine concentration up to 2 mol/l. The activation energy for CO2-MDEA reaction obtained from this work was found to be 49.24 kJ/mol, and the overall rate constants (kov) increased with increasing temperature and with increasing proportion of Glycine in the solution mixture. Using the zwitterion mechanism to interpret the CO2-MDEA-Gly reaction, we found that the glycine reacts with CO2 (aq) with k2 (M-1 s-1) = 2.40 x 107 exp(-3887.5/T(K)) with an activation energy of 22.95 kJ/mol.
SponsorThis paper was made possible by an NPRP Grant # 7-1154-2-433 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.
Languageen
PublisherElsevier
SubjectCarbon dioxide
Glycice
Kinetics
N-methyldiethanolamine
Stopped flow technique
TitleReaction kinetics of carbon dioxide in aqueous blends of N-methyldiethanolamine and glycine using the stopped flow technique
TypeArticle
Pagination186-195
Volume Number33
dc.accessType Abstract Only


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