期刊
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS
卷 51, 期 2, 页码 131-137出版社
WILEY
DOI: 10.1002/kin.21236
关键词
carbon dioxide; kinetics; polyamine
Aqueous solutions of N,NMODIFIER LETTER PRIME-diethylethanolamine (DEEA) are prospective high-capacity CO2-capturing solvents. Their reactivity can be enhanced by promotion with absorption activators. Two polyamines were chosen as activators in this work, viz. (methylamino)propylamine (MAPA) and diethylene triamine (DETA). In a stirred cell reactor, kinetics of CO2 absorption into aqueous DEEA/MAPA and DEEA/DETA mixtures was studied at 303 K. The molarity of DEEA was varied in the 2-2.5 M range, whereas the polyamine concentration was changed between 0.1 and 0.5 M. Pseudo-first-order rate constants were reported. Second-order rate constants for the CO2 reactions with MAPA and DETA were determined too. DETA reacts faster than MAPA.
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