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

doi:10.1016/j.egypro.2013.05.179

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

School of Advanced Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

10 Citations (Scopus)

Abstract

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 /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 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 /CO^2-₃, and not from carbamate and carbonate.

Original language	English
Pages (from-to)	869-876
Number of pages	8
Journal	Energy Procedia
Volume	37
DOIs	https://doi.org/10.1016/j.egypro.2013.05.179
Publication status	Published - 2013 Jan 1
Event	11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan Duration: 2012 Nov 18 → 2012 Nov 22

Keywords

Amine
Carbamate
Carbon dioxide
Piperazine

ASJC Scopus subject areas

Energy(all)

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

abstract = "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.",

keywords = "Amine, Carbamate, Carbon dioxide, Piperazine",

author = "Miho Nitta and Masaki Hirose and Toru Abe and Yukio Furukawa and Hiroshi Sato and Yasuro Yamanaka",

year = "2013",

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doi = "10.1016/j.egypro.2013.05.179",

language = "English",

volume = "37",

pages = "869--876",

journal = "Energy Procedia",

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note = "11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 ; Conference date: 18-11-2012 Through 22-11-2012",

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TY - JOUR

T1 - 13C-NMR spectroscopic study on chemical species in piperazine-amine-CO2-H2O system before and after heating

AU - Nitta, Miho

AU - Hirose, Masaki

AU - Abe, Toru

AU - Furukawa, Yukio

AU - Sato, Hiroshi

AU - Yamanaka, Yasuro

PY - 2013/1/1

Y1 - 2013/1/1

N2 - 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.

AB - 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.

KW - Amine

KW - Carbamate

KW - Carbon dioxide

KW - Piperazine

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JO - Energy Procedia

JF - Energy Procedia

SN - 1876-6102

T2 - 11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012

Y2 - 18 November 2012 through 22 November 2012

ER -