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Acta Phys. Chim. Sin.  2014, Vol. 30 Issue (6): 1169-1174    DOI: 10.3866/PKU.WHXB201404223
Nitrogen-Rich Microporous Carbon Derived from Melamine-Based Porous Polymer for Selective CO2 Adsorption
HU Jing-Xiu, ZHANG Jing, ZOU Jian-Feng, XIAO Qiang, ZHONG Yi-Jun, ZHU Wei-Dong
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang Province, P. R. China
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Nitrogen-rich microporous carbon (NMC) was prepared by the carbonization of a melaminebased porous polymer (POP), which was synthesized via a Schiff base condensation using isophthalaldehyde and melamine as starting materials. N2 adsorption-desorption and Fourier transform infrared (FTIR) spectroscopy were used to characterize the structural properties of POP and the derived NMC. NMC contains less functional groups and has a higher specific surface area and microporous volume compared to POP. NMC has a N content of up to 12.5% (w), as determined by elemental analysis. Single-component adsorption equilibrium isotherms of CO2, CH4, and N2 on NMC were obtained using a volumetric method. NMC has a good CO2 capture property and its CO2 adsorption capacity was 2.34 mmol·g-1 at 298 K and 100 kPa. Dual-site Langmuir (DSL) or single-site Langmuir (SSL) models appropriately describe the adsorption equilibrium behavior of CO2, CH4, and N2 on NMC. Based on the combined fitting parameters, binary adsorption isotherms were predicted by ideal adsorbed solution theory (IAST). Very high adsorption selectivities of CO2 over N2 and CH4 were obtained and the values were 144.9 and 12.8, respectively.

Key wordsMicroporous carbon      CO2 adsorption      Langmuir model      IAST      Selectivity     
Received: 19 February 2014      Published: 22 April 2014
MSC2000:  O647  

The project was supported by the National Natural Science Foundation of China (21101139, 21371152).

Corresponding Authors: XIAO Qiang, ZHONG Yi-Jun     E-mail:;
Cite this article:

HU Jing-Xiu, ZHANG Jing, ZOU Jian-Feng, XIAO Qiang, ZHONG Yi-Jun, ZHU Wei-Dong. Nitrogen-Rich Microporous Carbon Derived from Melamine-Based Porous Polymer for Selective CO2 Adsorption. Acta Phys. Chim. Sin., 2014, 30(6): 1169-1174.

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