Different approaches for the development of low-cost CO2 adsorbents

M G Plaza, C Pevida, B Arias, M D Casal, C F Martin, J Fermoso, F Rubiera, J J Pis

Research output: Contribution to journalArticle

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Abstract

Different carbon materials were tested as precursors for the production of CO2 adsorbents. The chemical modification of the surface of the prepared adsorbents was studied by means of three different approaches: impregnation with amines, electrophilic aromatic substitution, and heat treatment in the presence of ammonia. The samples were chemically characterized and the porous texture was evaluated from the N2 adsorption isotherms at −196°C . The CO2 adsorption capacities of the adsorbents at 25 and 100°C were evaluated in a thermogravimetric analyzer. In general, the incorporation of basic nitrogen functionalities enhanced the CO2 capture capacities of the modified carbons, but this increase depended on the textural properties of the support and the surface modification methodology. CO2 adsorption capacities of up to 111mg CO2∕g at room temperature were attained. All the tested samples were completely regenerated when subjected to heat treatment at 100°C under inert atmosphere.

Original languageEnglish
Pages (from-to)426-432
Number of pages7
JournalJournal of Environmental Engineering
Volume135
Issue number6
Early online date23 Mar 2009
DOIs
Publication statusPublished - Jun 2009

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Adsorbents
adsorption
Carbon
Heat treatment
cost
Adsorption
Costs
carbon
Chemical modification
Adsorption isotherms
Ammonia
Impregnation
Amines
Surface treatment
isotherm
substitution
Substitution reactions
Nitrogen
ammonia
Textures

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Different approaches for the development of low-cost CO2 adsorbents. / Plaza, M G; Pevida, C; Arias, B; Casal, M D; Martin, C F; Fermoso, J; Rubiera, F; Pis, J J.

In: Journal of Environmental Engineering, Vol. 135, No. 6, 06.2009, p. 426-432.

Research output: Contribution to journalArticle

Plaza, MG, Pevida, C, Arias, B, Casal, MD, Martin, CF, Fermoso, J, Rubiera, F & Pis, JJ 2009, 'Different approaches for the development of low-cost CO2 adsorbents', Journal of Environmental Engineering, vol. 135, no. 6, pp. 426-432. https://doi.org/10.1061/(ASCE)EE.1943-7870.0000009
Plaza, M G ; Pevida, C ; Arias, B ; Casal, M D ; Martin, C F ; Fermoso, J ; Rubiera, F ; Pis, J J. / Different approaches for the development of low-cost CO2 adsorbents. In: Journal of Environmental Engineering. 2009 ; Vol. 135, No. 6. pp. 426-432.
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