Tetraethylenepentamine impregnated composite material ZSM-5/SBA-16 for CO2 adsorption

• Published in: Journal of materials research 2022-01, Vol.37 (2), p.543-553
• Main Authors: Jia, Yanfei, Wei, Jianwen, Yuan, Yuan, Geng, Linlin, Chen, Siqi, Liao, Lei
• Format: Article
• Language: English
• Subjects: Adsorbents; Adsorption; Applied and Technical Physics; Biomaterials; Carbon dioxide; Carbon sequestration; Chemistry and Materials Science; Composite materials; Flue gas; Inorganic Chemistry; Materials Engineering; Materials research; Materials Science; Nanotechnology; Thermal analysis; Thermogravimetric analysis
• ISSN: 0884-2914; 2044-5326
• DOI: 10.1557/s43578-021-00469-y

A stable and effective amine-modified adsorbent for CO 2 capture was prepared with the impregnation method using the ZSM-5/SBA-16 (ZS) as support and the tetraethylenepentamine (TEPA) as modifier. The CO 2 adsorption performance was investigated by thermal gravimetric analysis (TGA) in mixed gases (15% CO 2 and 85% N 2 ) at 30–90 °C. At 60 °C, the ZS displayed the highest CO 2 adsorption capacity of 2.80 mmol g −1 at 60% TEPA loading. The adsorption kinetics analysis showed that the adsorption process of amine-modified ZS was dominated by both physical and chemical adsorptions. After five cycles of adsorption/desorption, ZS-T-60 kept better stability with the equilibrium adsorption capacity of the composite material was 2.486 mmol g −1 , which was 11.1% lower than the original adsorption capacity. The composite material ZS showed good CO 2 capture ability, indicating the promising future of these adsorbents for CO 2 adsorption from actual flue gas after desulfurization. Graphical abstract