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Sterically Hindered Amine Functionalized Zeolites Prepared from Fly Ash for Effective Carbon Dioxide Adsorption


Affiliations
1 Energy and Resource Management Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
2 Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 6800, Riyadh 11421, Saudi Arabia
3 Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
 

Highly crystalline zeolite Na-X also known as Linde X, is synthesized in pure form using fly ash waste from coal-fired power plants. Functionalization of assynthesized adsorbent was carried out using 2-amino- 2-methyl-1-propanol in order to apply it in postcombustion carbon dioxide capture. Zeolite Na-X was thoroughly characterized through XRD, FTIR, SEM and TEM analysis. The synthesized zeolite was found to have high surface area and octahedral morphology. Zeolite X and functionalized zeolite X were evaluated in a dynamic adsorption assembly for the uptake of carbon dioxide. Functionalized zeolite was found to have better adsorption capacity at 55°C. It also showed good performance in the presence of moisture. Regeneration studies, however, showed a drop after the second cycle in case of functionalized adsorbent.

Keywords

Amine Functionalization, Adsorbent, Carbon Dioxide, Fly Ash, Zeolites.
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  • Sterically Hindered Amine Functionalized Zeolites Prepared from Fly Ash for Effective Carbon Dioxide Adsorption

Abstract Views: 399  |  PDF Views: 129

Authors

Arti Valechha
Energy and Resource Management Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
Sunit Kumar Singh
Energy and Resource Management Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
Ahmed Sadeq Al-Fatesh
Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 6800, Riyadh 11421, Saudi Arabia
Sadhana Rayalu
Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
Nitin Labhsetwar
Energy and Resource Management Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India

Abstract


Highly crystalline zeolite Na-X also known as Linde X, is synthesized in pure form using fly ash waste from coal-fired power plants. Functionalization of assynthesized adsorbent was carried out using 2-amino- 2-methyl-1-propanol in order to apply it in postcombustion carbon dioxide capture. Zeolite Na-X was thoroughly characterized through XRD, FTIR, SEM and TEM analysis. The synthesized zeolite was found to have high surface area and octahedral morphology. Zeolite X and functionalized zeolite X were evaluated in a dynamic adsorption assembly for the uptake of carbon dioxide. Functionalized zeolite was found to have better adsorption capacity at 55°C. It also showed good performance in the presence of moisture. Regeneration studies, however, showed a drop after the second cycle in case of functionalized adsorbent.

Keywords


Amine Functionalization, Adsorbent, Carbon Dioxide, Fly Ash, Zeolites.



DOI: https://doi.org/10.18520/cs%2Fv119%2Fi1%2F123-128