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Korean Journal of Chemical Engineering

, Volume 36, Issue 9, pp 1482–1488 | Cite as

Mesoporous carbon supported MgO for CO2 capture and separation of CO2/N2

  • Harshitha Burri
  • Rumana Anjum
  • Ramesh Babu Gurram
  • Harisekhar Mitta
  • Suresh Mutyala
  • Madhavi JonnalagaddaEmail author
Separation Technology, Thermodynamics
  • 99 Downloads

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 1.68 mmol/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.

Keywords

MgO Mesoporous Carbon CO2 and N2 Adsorption Selectivity Heat of CO2 Adsorption 

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Notes

Acknowledgement

HB and RA acknowledge the Science and Engineering Research Board, Department of Science and Technology, New Delhi, India for the financial support (Grant No. EMEQ-283/2014).

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Copyright information

© The Korean Institute of Chemical Engineering (KIChE) 2019

Authors and Affiliations

  • Harshitha Burri
    • 1
  • Rumana Anjum
    • 1
  • Ramesh Babu Gurram
    • 2
  • Harisekhar Mitta
    • 3
  • Suresh Mutyala
    • 4
  • Madhavi Jonnalagadda
    • 1
    Email author
  1. 1.Department of ChemistryGovernment Degree College for WomenKarimnagarIndia
  2. 2.Catalysis LaboratoryIndian Institute of Chemical TechnologyHyderabadIndia
  3. 3.State Key Laboratory of Catalysis, Dalian Institute of Chemical PhysicsChinese Academy of ScienceDalianChina
  4. 4.Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceShantou UniversityGuangdongChina

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