Kinetics of carbon dioxide absorption into aqueous MDEA+bmimBF 4 solutions from 303 to 333K
The kinetics of CO 2 absorption in aqueous solutions of MDEA+bmimBF 4 were investigated using a stirred cell reactor where the relevant parameters were evaluated. The rate equation of the absorption reaction was found to be close to first order with respect to CO 2 at temperatures ranging from 303 t...
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| Main Authors: | , , |
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| Format: | Article |
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Elsevier
2012
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/7405/ http://www.sciencedirect.com/science/article/pii/S1385894712007589 |
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| Summary: | The kinetics of CO 2 absorption in aqueous solutions of MDEA+bmimBF 4 were investigated using a stirred cell reactor where the relevant parameters were evaluated. The rate equation of the absorption reaction was found to be close to first order with respect to CO 2 at temperatures ranging from 303 to 333K and bmimBF 4 concentration from 0 to 2.0molL -1. The activation energy decreased from 43.32kJmol -1 to 8.65kJmol -1 with increasing bmimBF 4 concentration from 0 to 2.0molL -1 in aqueous 4molL -1 MDEA solution. Calculated results of the enhancement factor and Hatta number showed that the performance of CO 2 absorption in the aqueous 4molL -1 MDEA+bmimBF 4 solution almost obeyed the pseudo first order regime. |
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