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- Title
Sterically hindered amine functionalized zeolites prepared from fly ash for effective carbon dioxide adsorption.
- Authors
Valechha, Arti; Singh, Sunit Kumar; Al-Fatesh, Ahmed Sadeq; Rayalu, Sadhana; Labhsetwar, Nitin
- 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.
- Subjects
FLY ash; CARBON dioxide adsorption; ZEOLITES; COAL-fired power plants; CARBON dioxide; ADSORPTION capacity
- Publication
Current Science (00113891), 2020, Vol 119, Issue 1, p123
- ISSN
0011-3891
- Publication type
Article
- DOI
10.18520/cs/v119/i1/123-128