Abstract
Chemical reactions associated with the absorption of CO 2 into aqueous solutions of blends of piperazine (PZ) with N-methyldiethanolamine (MDEA), etc. were studied by 13C-NMR spectroscopy. The coexistence of PZ and MDEA enhanced the initial apparent rate of HCO - 3 /CO 2- 3 formation. This result can be explained by considering that PZ monocarbamate rapidly formed works as an organocatalyst in the formation reaction of HCO - 3 . Concentration changes of chemical species in CO 2-absorbed aqueous amine solutions upon heating (80 °C, 30 min) were studied by 13C-NMR spectroscopy. Carbon dioxide regeneration originates mainly from HCO - 3 /CO 2- 3, and not from carbamate and carbonate.
| Original language | English |
|---|---|
| Title of host publication | Energy Procedia |
| Pages | 869-876 |
| Number of pages | 8 |
| Volume | 37 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | 11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan Duration: 2012 Nov 18 → 2012 Nov 22 |
Other
| Other | 11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 |
|---|---|
| Country | Japan |
| City | Kyoto |
| Period | 12/11/18 → 12/11/22 |
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Keywords
- C-NMR
- Amine
- Carbamate
- Carbon dioxide
- Piperazine
ASJC Scopus subject areas
- Energy(all)
Cite this
13C-NMR spectroscopic study on chemical species in piperazine-amine-CO 2-H 2O system before and after heating . / Nitta, Miho; Hirose, Masaki; Abe, Toru; Furukawa, Yukio; Sato, Hiroshi; Yamanaka, Yasuro.
Energy Procedia. Vol. 37 2013. p. 869-876.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - 13C-NMR spectroscopic study on chemical species in piperazine-amine-CO 2-H 2O system before and after heating
AU - Nitta, Miho
AU - Hirose, Masaki
AU - Abe, Toru
AU - Furukawa, Yukio
AU - Sato, Hiroshi
AU - Yamanaka, Yasuro
PY - 2013
Y1 - 2013
N2 - Chemical reactions associated with the absorption of CO 2 into aqueous solutions of blends of piperazine (PZ) with N-methyldiethanolamine (MDEA), etc. were studied by 13C-NMR spectroscopy. The coexistence of PZ and MDEA enhanced the initial apparent rate of HCO - 3 /CO 2- 3 formation. This result can be explained by considering that PZ monocarbamate rapidly formed works as an organocatalyst in the formation reaction of HCO - 3 . Concentration changes of chemical species in CO 2-absorbed aqueous amine solutions upon heating (80 °C, 30 min) were studied by 13C-NMR spectroscopy. Carbon dioxide regeneration originates mainly from HCO - 3 /CO 2- 3, and not from carbamate and carbonate.
AB - Chemical reactions associated with the absorption of CO 2 into aqueous solutions of blends of piperazine (PZ) with N-methyldiethanolamine (MDEA), etc. were studied by 13C-NMR spectroscopy. The coexistence of PZ and MDEA enhanced the initial apparent rate of HCO - 3 /CO 2- 3 formation. This result can be explained by considering that PZ monocarbamate rapidly formed works as an organocatalyst in the formation reaction of HCO - 3 . Concentration changes of chemical species in CO 2-absorbed aqueous amine solutions upon heating (80 °C, 30 min) were studied by 13C-NMR spectroscopy. Carbon dioxide regeneration originates mainly from HCO - 3 /CO 2- 3, and not from carbamate and carbonate.
KW - C-NMR
KW - Amine
KW - Carbamate
KW - Carbon dioxide
KW - Piperazine
UR - http://www.scopus.com/inward/record.url?scp=84898750785&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898750785&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2013.05.179
DO - 10.1016/j.egypro.2013.05.179
M3 - Conference contribution
AN - SCOPUS:84898750785
VL - 37
SP - 869
EP - 876
BT - Energy Procedia
ER -