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Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture

Activated carbon (AC) surface may be modified by grafting amine-containing compounds to improve the CO2 adsorption capacity. Two solid sorbents were prepared by anchoring a halogenated amine, i.e., 2-chloroethylamine hydrochloric acid (CEA) on the surface of a microporous AC using a two-stage modifi...

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Main Authors: Houshmand, A., Shafeeyan, M.S., Arami-Niya, A., Daud, Wan Mohd Ashri Wan
Format: Article
Language:English
Published: Elsevier 2013
Subjects:
QD Chemistry
Online Access:http://eprints.um.edu.my/13928/1/Amir_Paper.pdf
http://eprints.um.edu.my/13928/
https://doi.org/10.1016/j.jtice.2013.01.014
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spelling my.um.eprints.139282019-03-19T03:38:59Z http://eprints.um.edu.my/13928/ Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture Houshmand, A. Shafeeyan, M.S. Arami-Niya, A. Daud, Wan Mohd Ashri Wan QD Chemistry Activated carbon (AC) surface may be modified by grafting amine-containing compounds to improve the CO2 adsorption capacity. Two solid sorbents were prepared by anchoring a halogenated amine, i.e., 2-chloroethylamine hydrochloric acid (CEA) on the surface of a microporous AC using a two-stage modification. At the first stage, the samples of AC were oxidized by nitric acid to increase the amount of oxygen surface groups and at the second stage, the oxidized samples were modified by anchoring CEA on the surface to produce a superior CO2 adsorbent. The oxidized samples were compared with the aid of proximate and ultimate analysis, nitrogen adsorption–desorption at �196 8C (77 K) and temperature programmed desorption (TPD) to decide on the best oxidation conditions. The amine-modified samples were analyzed in terms of texture, surface chemistry and CO2 adsorption. The latter was studied using isothermal CO2 capture, temperature-programmed (TP) CO2 adsorption and cyclic operation. The modified samples had a lower surface area than the parent sample. The best modified sample presented an increase of 45% in CO2 capture capacity at 100 8C. Based on unit surface area, the modified samples showed great CO2 capture capacities, compared to the virgin sample. Moreover, the modified samples presented a less dependency of CO2 capacity on temperature. This indicates that the adsorption mechanism shifts from physisorption to chemisorption by increasing temperature. Elsevier 2013-09 Article PeerReviewed application/pdf en http://eprints.um.edu.my/13928/1/Amir_Paper.pdf Houshmand, A. and Shafeeyan, M.S. and Arami-Niya, A. and Daud, Wan Mohd Ashri Wan (2013) Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture. Journal of the Taiwan Institute of Chemical Engineers, 44 (5). pp. 774-779. ISSN 1876-1070 https://doi.org/10.1016/j.jtice.2013.01.014 doi:10.1016/j.jtice.2013.01.014
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Houshmand, A.
Shafeeyan, M.S.
Arami-Niya, A.
Daud, Wan Mohd Ashri Wan
Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
description Activated carbon (AC) surface may be modified by grafting amine-containing compounds to improve the CO2 adsorption capacity. Two solid sorbents were prepared by anchoring a halogenated amine, i.e., 2-chloroethylamine hydrochloric acid (CEA) on the surface of a microporous AC using a two-stage modification. At the first stage, the samples of AC were oxidized by nitric acid to increase the amount of oxygen surface groups and at the second stage, the oxidized samples were modified by anchoring CEA on the surface to produce a superior CO2 adsorbent. The oxidized samples were compared with the aid of proximate and ultimate analysis, nitrogen adsorption–desorption at �196 8C (77 K) and temperature programmed desorption (TPD) to decide on the best oxidation conditions. The amine-modified samples were analyzed in terms of texture, surface chemistry and CO2 adsorption. The latter was studied using isothermal CO2 capture, temperature-programmed (TP) CO2 adsorption and cyclic operation. The modified samples had a lower surface area than the parent sample. The best modified sample presented an increase of 45% in CO2 capture capacity at 100 8C. Based on unit surface area, the modified samples showed great CO2 capture capacities, compared to the virgin sample. Moreover, the modified samples presented a less dependency of CO2 capacity on temperature. This indicates that the adsorption mechanism shifts from physisorption to chemisorption by increasing temperature.
format Article
author Houshmand, A.
Shafeeyan, M.S.
Arami-Niya, A.
Daud, Wan Mohd Ashri Wan
author_facet Houshmand, A.
Shafeeyan, M.S.
Arami-Niya, A.
Daud, Wan Mohd Ashri Wan
author_sort Houshmand, A.
title Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
title_short Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
title_full Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
title_fullStr Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
title_full_unstemmed Anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
title_sort anchoring a halogenated amine on the surface of a microporous activated carbon for carbon dioxide capture
publisher Elsevier
publishDate 2013
url http://eprints.um.edu.my/13928/1/Amir_Paper.pdf
http://eprints.um.edu.my/13928/
https://doi.org/10.1016/j.jtice.2013.01.014
_version_ 1643689686816784384
score 13.211869

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