13C-NMR Spectroscopic Study on Chemical Species in Piperazine-Amine-CO2-H2O System before and after Heating

被引：10

作者：

Nitta, Miho ^{[1
]}

Hirose, Masaki ^{[1
]}

Abe, Toru ^{[1
]}

Furukawa, Yukio ^{[1
]}

Sato, Hiroshi ^{[2
]}

Yamanaka, Yasuro ^{[3
]}

机构：

[1] Waseda Univ, Grad Sch Adv Sci & Engn, Dept Chem & Biochem, Shinjuku Ku, Tokyo 1698555, Japan

[2] IHI Corp, Res Lab, Yokohama, Kanagawa 235, Japan

[3] IHI Corp, Energy Operat, Tokyo 135, Japan

来源：

GHGT-11 | 2013年 / 37卷

关键词：

C-13-NMR; amine; piperazine; carbamate; carbon dioxide;

D O I：

10.1016/j.egypro.2013.05.179

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Chemical reactions associated with the absorption of CO2 into aqueous solutions of blends of piperazine (PZ) with N-methyldiethanolamine (MDEA), etc. were studied by C-13-NMR spectroscopy. The coexistence of PZ and MDEA enhanced the initial apparent rate of HCO3-/CO32- formation. This result can be explained by considering that PZ monocarbamate rapidly formed works as an organocatalyst in the formation reaction of HCO3-. Concentration changes of chemical species in CO2-absorbed aqueous amine solutions upon heating (80 degrees C, 30 min) were studied by C-13-NMR spectroscopy. Carbon dioxide regeneration originates mainly from HCO3-/CO32-, and not from carbamate and carbonate.(C) 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license. Selection and/or peer-review under responsibility of GHGT

引用

页码：869 / 876

页数：8

共 26 条

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