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Improved CO2 adsorption capacity and cyclic stability of CaO sorbents incorporated with MgO

Mohd Daud, Farah Diana and Vignesh, Kumaravel and Sreekantan, Srimala and Mohamed, Abd. Rahman (2015) Improved CO2 adsorption capacity and cyclic stability of CaO sorbents incorporated with MgO. New Journal of Chemistry, 40 (1). pp. 231-237. ISSN 1144-0546 E-ISSN 1369-9261

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Abstract

Calcium oxide (CaO) sorbents incorporated with magnesium oxide (MgO) were synthesized using a co-precipitation route. The sorbents were prepared with different MgO concentrations (from 5 wt% to 30 wt%). The as-prepared sorbents were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX) and BET surface area analysis techniques. The sintering effect of CaO sorbents was decreased after the incorporation of MgO. The sorbents with 5 wt% and 10 wt% of MgO retained their CO2 adsorption capacity over multiple cycles. Most importantly, CaO with 10 wt% MgO showed constant CO2 adsorption capacity over 30 carbonation cycles. The results revealed that CaO with 10 wt% MgO is sufficient to produce sorbents with high surface area, good structural stability and enhanced CO2 adsorption capacity.

Item Type: Article (Journal)
Additional Information: 7338/45909
Uncontrolled Keywords: CO2 adsorption, oxide adsorbents, CaO sorbents
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA170 Environmental engineering
T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: DR FARAH DIANA MOHD DAUD
Date Deposited: 05 Feb 2016 11:41
Last Modified: 21 Dec 2016 14:49
URI: http://irep.iium.edu.my/id/eprint/45909

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