Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/917332

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Title
Carbon dioxide postcombustion capture: a novel screening study of the carbon dioxide absorption performance of 76 amines
Author/Creator
Puxty, Graeme;  Rowland, Robert;  Allport, Andrew;  Yang, Qi;  Bown, Mark;  Burns, Robert;  Maeder, Marcel;  Attalla, Moetaz
Institution
The University of Newcastle. Faculty of Science & Information Technology, School of Environmental and Life Sciences
Description
The significant and rapid reduction of greenhouse gas emissions is recognized as necessary to mitigate the potential climate effects from global warming. The postcombustion capture (PCC) and storage of carbon dioxide (CO₂) produced from the use of fossil fuels for electricity generation is a key technology needed to achieve these reductions. The most mature technology for CO₂ capture is reversible chemical absorption into an aqueous amine solution. In this study the results from measurements of the CO₂ absorption capacity of aqueous amine solutions for 76 different amines are presented. Measurements were made using both a novel isothermal gravimetric analysis (IGA) method and a traditional absorption apparatus. Seven amines, consisting of one primary, three secondary, and three tertiary amines, were identified as exhibiting outstanding absorption capacities. Most have a number of structural features in common including steric hindrance and hydroxyl functionality 2 or 3 carbons from the nitrogen. Initial CO₂ absorption rate data from the IGA measurements was also used to indicate relative absorption rates. Most of the outstanding performers in terms of capacity also showed initial absorption rates comparable to the industry standard monoethanolamine (MEA). This indicates, in terms of both absorption capacity and kinetics, that they are promising candidates for further investigation.
Relation
Environmental Science & Technology Vol. 43, Issue 16, p. 6427-6433
Publisher Link
http://dx.doi.org/10.1021/es901376a
Date
2009
Publisher
American Chemical Society
Keyword(s)
acid dissociation constant;  aqueous piperazine;  reaction kinetics;  CO₂;  monoethanolamine;  alkanolamines;  hydrolysis;  absorbents
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/917332
Identifier
ISSN:0013-936X
Reviewed
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Subject
"Environmental Science & Technology"
 
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