270450 A Nove Amino-Functionalized Ionic Liquid for CO2 Capture

Tuesday, October 30, 2012: 1:20 PM
306 (Convention Center )
Jinzhi Zhang1, Haifeng Dong1 and Xiangping Zhang2, (1)Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China, (2)Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China

Ionic liquids (ILs), especially amino-functionalized ionic liquids, have been found to be effective for CO2 capture because of their unique properties such as negligible vapor pressure, high thermal stability and good absorption capacity[1-2]. As reported [3-5], ILs of more amine groups could afford higher CO2 solubility. To explore deeply into this viewpoint, a new ionic liquid is synthesized and used in lab scale of CO2capture experiments to identify the relationship between the structure characteristics and capture performance in terms of the absorption rate and capacity.

In present work, a novel amino-functionalized ionic liquid was synthesized and characterized by 1H NMR, 13C NMR, IR and MS. The physicochemical properties including glass transition temperature and thermal decomposition temperature were tested. Experiment result shows that this ionic liquid is capable of rapid capture 0.174g CO2 / g IL at 303.15K and atmospheric pressure, which is the theoretical maximum for absorption of CO2 chemically. The interactions of the ionic liquid with CO2 were further investigated by comparison of both the FTIR and 13C NMR spectra of the gas-untreated and gas-treated materials to support the experimental and the theoretical results.

Moreover, the synthesized ionic liquid could be recycled under vacuum at 100°C.


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[3] Z. Xue, Z. Zhang, J. Han, Y. Chen, T. Mu, International Journal of Greenhouse Gas Control 2011, 5, 628-633.

[4] J. M. Zhang, S. J. Zhang, K. Dong, Y. Q. Zhang, Y. Q. Shen, X. M. Lv, Chem.-Eur. J. 2006, 12, 4021-4026.

[5] Y. Zhang, S. Zhang, X. Lu, Q. Zhou, W. Fan, X. Zhang, Chemistry - A European Journal 2009, 15, 3003-3011.

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