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In relation to this article, we declare that there is no conflict of interest.
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Received February 3, 2019
Accepted July 23, 2019
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Mesoporous carbon supported MgO for CO2 capture and separation of CO2/N2

Department of Chemistry, Government Degree College for Women, Karimnagar, Telangana, India 1Catalysis Laboratory, Indian Institute of Chemical Technology, Hyderabad-500007, India 2State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian-116023, China 3Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Guangdong 515063, China
madhavi0521@gmail.com
Korean Journal of Chemical Engineering, September 2019, 36(9), 1482-1488(7), 10.1007/s11814-019-0346-3
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Abstract

Mesoporous carbon derived from pongamia pinnata fruit hulls was used as support to incorporate magnesium oxide for the study of CO2 adsorption and separation of CO2/N2. All synthesized adsorbents were characterized by PXRD, N2 adsorption-desorption isotherms, Raman and SEM with EDX techniques. Characterization results revealed the existence of magnesium oxide on mesoporous carbon. CO2 adsorption on MgO incorporated mesoporous carbon was higher than bulk mesoporous carbon, due to the electrostatic interaction between magnesium oxide and CO2. High CO2 adsorption capacity 1.68mmol/g was obtained for 10 wt% MgO incorporated mesoporous carbon at 298 K, 1 bar compared to remaining loadings, because of the high content of MgO. However, the N2 adsorption capacity decreased with the increase of MgO content due to a decrease in surface area and no interaction of the N2 molecule with the adsorbent. The selectivity of CO2/N2 was higher on 10 wt% MgO incorporated mesoporous carbon and the value was 40. The heat of CO2 adsorption was 36KJ/mol at low coverage of CO2, and CO2 adsorption capacity was constant in each adsorption cycle over the same adsorbent.

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