Imine-linked polymer-derived nitrogen-doped microporous carbons with excellent CO2 capture properties

Wang J, Senkovska I, Oschatz M, Lohe MR, Borchardt L, Heerwig A, Liu Q, Kaskel S (2013)

Publication Type: Journal article

Publication year: 2013

Journal

ACS Applied Materials and Interfaces American Chemical Society

Book Volume: 5

Pages Range: 3160-3167

Journal Issue: 8

DOI: 10.1021/am400059t

Abstract

A series of nitrogen-doped microporous carbons (NCs) was successfully prepared by direct pyrolysis of high-surface-area microporous imine-linked polymer (ILP, 744 m²/g) which was formed using commercial starting materials based on the Schiff base condensation under catalyst-free conditions. These NCs have moderate specific surface areas of up to 366 m²/g, pore volumes of 0.43 cm³/g, narrow micropore size distributions, and a high density of nitrogen functional groups (5.58-8.74%). The resulting NCs are highly suitable for CO2 capture adsorbents because of their microporous textural properties and large amount of Lewis basic sites. At 1 bar, NC-800 prepared by the pyrolysis of ILP at 800 C showed the highest CO 2 uptakes of 1.95 and 2.65 mmol/g at 25 and 0 C, respectively. The calculated adsorption capacity for CO2 per m² (μmol of CO2/m²) of NC-800 is 7.41 μmol of CO2/m ² at 1 bar and 25 C, the highest ever reported for porous carbon adsorbents. The isosteric heats of CO2 adsorption (Qst) for these NCs are as high as 49 kJ/mol at low CO2 surface coverage, and still ∼25 kJ/mol even at high CO2 uptake (2.0 mmol/g), respectively. Furthermore, these NCs also exhibit high stability, excellent adsorption selectivity for CO2 over N2, and easy regeneration and reuse without any evident loss of CO2 adsorption capacity. © 2013 American Chemical Society.

Involved external institutions

Shanghai Institute of Ceramics of the Chinese Academy of Sciences (SICCAS)

China (CN) Technische Universität Dresden

Germany (DE)

How to cite

APA:

Wang, J., Senkovska, I., Oschatz, M., Lohe, M.R., Borchardt, L., Heerwig, A.,... Kaskel, S. (2013). Imine-linked polymer-derived nitrogen-doped microporous carbons with excellent CO2 capture properties. ACS Applied Materials and Interfaces, 5(8), 3160-3167. https://doi.org/10.1021/am400059t

MLA:

Wang, Jiacheng, et al. "Imine-linked polymer-derived nitrogen-doped microporous carbons with excellent CO2 capture properties." ACS Applied Materials and Interfaces 5.8 (2013): 3160-3167.

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