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Bacterial cellulose assisted synthesis of hierarchical pompon-like SAPO-34 for CO2 adsorption
College of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, Jiangsu, PR China.
College of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, Jiangsu, PR China.
College of Chemical and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, Jiangsu, PR China.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0002-7792-1348
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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. Vol. 331, article id 111664
Keywords [en]
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: urn:nbn:se:ltu:diva-88732DOI: 10.1016/j.micromeso.2021.111664ISI: 000750549400003Scopus ID: 2-s2.0-85122028195OAI: oai:DiVA.org:ltu-88732DiVA, id: diva2:1630045
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).

Available from: 2022-01-19 Created: 2022-01-19 Last updated: 2022-03-14Bibliographically approved

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Nobandegani, Mojtaba SinaeiYu, Liang

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