Structure and activity relationships for amine based CO2 absorbents—II


Singh, Prachi and Niederer, John P.M. and Versteeg, Geert F. (2009) Structure and activity relationships for amine based CO2 absorbents—II. Chemical engineering research and design (Transactions of the Institution of Chemical Engineers, part A), 87 (2). pp. 135-144. ISSN 0263-8762

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Abstract:A study to determine the structure and activity relationships of various amine-based CO2 absorbents was performed, in which the absorption of pure CO2 at atmospheric pressure was measured to assess the total absorption rates and capacities. Steric hindrance effect was noticed when side chain with alkyl group was present at the α-carbon to the amine group in the absorbent structure. An increase in the number of amine groups in absorbent structure, results in a higher capacity of upto 3.03 moles CO2/moles amine. Aromatic amines substituted with alkyl groups at the 2nd and 5th position show an increase in both absorption rate and capacity.
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Copyright:© 2009 Elsevier
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