Issue 8, 2012
From the journal:

Energy & Environmental Science

Selective adsorption of carbon dioxide by carbonized porous aromatic framework (PAF)†

Teng Ben,a   Yanqiang Li,a   Liangkui Zhu,a   Daliang Zhang,a   Dapeng Cao,b   Zhonghua Xiang,b   Xiangdong Yaocd  and  Shilun Qiu*a  

* Corresponding authors

a State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun, China
E-mail: sqiu@jlu.edu.cn
Fax: +86 431-8516-8589
Tel: +86 431-8516-8589

b Division of Molecular and Materials Simulation, State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, China

c ARC Centre of Excellence for Functional Nanomaterials, University of Queensland, Brisbane, QLD 4072, Australia

d Queensland Micro- and Nanotechnology Centre (QMNC), Griffith University, Brisbane, QLD 4111, Australia

Abstract

A series of carbonized PAF-1s were obtained with enhanced gas storage capacities and isosteric heats of adsorption (Qst for short). Especially, PAF-1-450 can adsorb 4.5 mmol g−1 CO2 at 273 K and 1 bar. Moreover, it also exhibits excellent selectivity over other gases. On the basis of single component isotherm data, the dual-site Langmuir–Freundlich adsorption model-based ideal adsorption solution theory (IAST) prediction indicates that the CO2/N2 adsorption selectivity is as high as 209 at a 15/85 CO2/N2 ratio. Also, the CO2/CH4 adsorption selectivity is in the range of 7.8–9.8 at a 15/85 CO2/CH4 ratio at 0 < p < 40 bar, which is highly desirable for landfill gas separation. The calculated CO2/H2 adsorption selectivity is about 392 at 273 K and 1 bar for 20/80 CO2/H2 mixture. Besides, these carbonized PAF-1s possess excellent physicochemical stability. Practical applications in capture of CO2 lie well within the realm of possibility.

Graphical abstract: Selective adsorption of carbon dioxide by carbonized porous aromatic framework (PAF)

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Article information

DOI
https://doi.org/10.1039/C2EE21935B
Article type
Paper
Submitted
12 Apr 2012
Accepted
09 May 2012
First published
09 May 2012

Energy Environ. Sci., 2012,5, 8370-8376

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Selective adsorption of carbon dioxide by carbonized porous aromatic framework (PAF)

T. Ben, Y. Li, L. Zhu, D. Zhang, D. Cao, Z. Xiang, X. Yao and S. Qiu, Energy Environ. Sci., 2012, 5, 8370 DOI: 10.1039/C2EE21935B

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