13C-NMR spectroscopic study on chemical species in piperazine-amine-CO2-H2O system before and after heating

Miho Nitta, Masaki Hirose, Toru Abe, Yukio Furukawa*, Hiroshi Sato, Yasuro Yamanaka


研究成果: Conference article査読

10 被引用数 (Scopus)


Chemical reactions associated with the absorption of CO2 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 /CO2-3 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 CO2-absorbed aqueous amine solutions upon heating (80 °C, 30 min) were studied by 13C-NMR spectroscopy. Carbon dioxide regeneration originates mainly from HCO-3 /CO2-3, and not from carbamate and carbonate.

ジャーナルEnergy Procedia
出版ステータスPublished - 2013 1 1
イベント11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan
継続期間: 2012 11 182012 11 22

ASJC Scopus subject areas

  • エネルギー(全般)


「<sup>13</sup>C-NMR spectroscopic study on chemical species in piperazine-amine-CO<sub>2</sub>-H<sub>2</sub>O system before and after heating」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。