Abstract
Anhydrous DMEA, DEEA and DIPEA are found to absorb carbon dioxide under pressure via chemical binding and physical absorption. The chemical CO 2-bound derivatives of these materials are zwitterionic alkylcarbonate salts which are characterized by high-pressure 13C NMR. DMEA, DEEA and DIPEA absorb 20 wt.%, 17 wt.% and 16 wt.% carbon dioxide, respectively, at 300 psig (20.6 ATM). An increasing chemical carbon dioxide uptake capacity trend of DMEA > DEEA > DIPEA is observed while the physical CO2 absorption trend is DIPEA > DEEA > DMEA. DMEA captures up to 45 mole % (20 wt.%) of CO2 at 500 psig via both chemical binding and physical absorption. The amount of chemically bound and physically absorbed CO2 is directly linked to the CO2 pressure over the liquid. The zwitterion DMEA-CO2 regenerates CO 2 and DMEA upon depressurization, allowing for an economical pressure swing regeneration rather than thermal regeneration. DMEA absorbs/releases CO2 repeatedly with no decline in capacity.
| Original language | English |
|---|---|
| Pages (from-to) | 480-484 |
| Number of pages | 5 |
| Journal | Energy and Environmental Science |
| Volume | 4 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2011 |
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ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Environmental Chemistry
- Pollution
- Nuclear Energy and Engineering
Cite this
Anhydrous tertiary alkanolamines as hybrid chemical and physical CO 2 capture reagents with pressure-swing regeneration. / Rainbolt, James E.; Koech, Phillip K.; Yonker, Clement R.; Zheng, Feng; Main, Denise; Weaver, Matt L.; Linehan, John; Heldebrant, David J.
In: Energy and Environmental Science, Vol. 4, No. 2, 02.2011, p. 480-484.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anhydrous tertiary alkanolamines as hybrid chemical and physical CO 2 capture reagents with pressure-swing regeneration
AU - Rainbolt, James E.
AU - Koech, Phillip K.
AU - Yonker, Clement R.
AU - Zheng, Feng
AU - Main, Denise
AU - Weaver, Matt L.
AU - Linehan, John
AU - Heldebrant, David J.
PY - 2011/2
Y1 - 2011/2
N2 - Anhydrous DMEA, DEEA and DIPEA are found to absorb carbon dioxide under pressure via chemical binding and physical absorption. The chemical CO 2-bound derivatives of these materials are zwitterionic alkylcarbonate salts which are characterized by high-pressure 13C NMR. DMEA, DEEA and DIPEA absorb 20 wt.%, 17 wt.% and 16 wt.% carbon dioxide, respectively, at 300 psig (20.6 ATM). An increasing chemical carbon dioxide uptake capacity trend of DMEA > DEEA > DIPEA is observed while the physical CO2 absorption trend is DIPEA > DEEA > DMEA. DMEA captures up to 45 mole % (20 wt.%) of CO2 at 500 psig via both chemical binding and physical absorption. The amount of chemically bound and physically absorbed CO2 is directly linked to the CO2 pressure over the liquid. The zwitterion DMEA-CO2 regenerates CO 2 and DMEA upon depressurization, allowing for an economical pressure swing regeneration rather than thermal regeneration. DMEA absorbs/releases CO2 repeatedly with no decline in capacity.
AB - Anhydrous DMEA, DEEA and DIPEA are found to absorb carbon dioxide under pressure via chemical binding and physical absorption. The chemical CO 2-bound derivatives of these materials are zwitterionic alkylcarbonate salts which are characterized by high-pressure 13C NMR. DMEA, DEEA and DIPEA absorb 20 wt.%, 17 wt.% and 16 wt.% carbon dioxide, respectively, at 300 psig (20.6 ATM). An increasing chemical carbon dioxide uptake capacity trend of DMEA > DEEA > DIPEA is observed while the physical CO2 absorption trend is DIPEA > DEEA > DMEA. DMEA captures up to 45 mole % (20 wt.%) of CO2 at 500 psig via both chemical binding and physical absorption. The amount of chemically bound and physically absorbed CO2 is directly linked to the CO2 pressure over the liquid. The zwitterion DMEA-CO2 regenerates CO 2 and DMEA upon depressurization, allowing for an economical pressure swing regeneration rather than thermal regeneration. DMEA absorbs/releases CO2 repeatedly with no decline in capacity.
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UR - http://www.scopus.com/inward/citedby.url?scp=79851482609&partnerID=8YFLogxK
U2 - 10.1039/c0ee00506a
DO - 10.1039/c0ee00506a
M3 - Article
VL - 4
SP - 480
EP - 484
JO - Energy and Environmental Science
JF - Energy and Environmental Science
SN - 1754-5692
IS - 2
ER -