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2022 (English)In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 331, article id 111664Article in journal (Refereed) Published
Abstract [en]
In the present work, a biosynthesis route for the preparation of hierarchical pompon-like SAPO-34 was developed. Commercially available bacterial cellulose aerogel was used as template. SiO2 loaded bacterial cellulose aerogel was used as silica source and a simple hydrothermal treatment was used for crystallization. XRD, FT-IR, SEM, TEM, N2 adsorption-desorption and TG techniques were employed to characterize the obtained samples. The hierarchical pompon-like SAPO-34 showed a spherical morphology that was comprised of nanosheets with a thickness less than 30 nm. The specific surface area of the hierarchical pompon-like SAPO-34 was 498 m2/g that was higher than the trigonal SAPO-34 crystals of 465 m2/g. The ultrasonic treatment experiment indicated a high stability of the pompon-like structure. In addition, the hierarchical pompon-like SAPO-34 exhibited a CO2 adsorption capacity of 2.26 mmol/g at 100 kPa and 298K and the corresponding CO2/CH4 ideal separation factor was 5.7, which was higher than that of trigonal SAPO-34 crystals. The saturated adsorption capacity and b-value were estimated using single site Langmuir, Toth and Sips adsorption isotherm models and the observed results were constant. Compared with trigonal SAPO-34, hierarchical pompon-like SAPO-34 displayed a higher saturated adsorption capacity, but a lower b-value.
Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Adsorption, Aerogels, Biochemistry, Carbon dioxide, Cellulose, Crystal structure, Morphology, Silica gel, B value, Bacterial cellulose, Biosynthesis route, Cellulose aerogels, CO2 adsorption, Hierarchical pompon-like SAPO-34, SAPO-34, Saturated adsorption capacity, Silica sources, Simple++, Biosynthesis
National Category
Materials Chemistry
Research subject
Chemical Technology
Identifiers
urn:nbn:se:ltu:diva-88732 (URN)10.1016/j.micromeso.2021.111664 (DOI)000750549400003 ()2-s2.0-85122028195 (Scopus ID)
Note
Validerad;2022;Nivå 2;2022-01-19 (johcin);
Funder:National & Local Joint Engineering Research Center for Deep Utilization Technology of Rock-salt Resource (SF201804); Jiangsu University of Technology (11610412042).
2022-01-192022-01-192022-03-14Bibliographically approved