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Luo R, Ding H, Lyu J, Fu T, Bai P, Guo X, Tsapatsis M. Fabrication of a sandwiched silicalite-1 membrane in a 2D confined space for enhanced alcohol/water separation. Chem Commun (Camb) 2020; 56:12586-12588. [PMID: 32945298 DOI: 10.1039/d0cc05019a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dense zeolite layer with a thickness of approximately 500 nm was demonstrated by a confined-space strategy in a sandwiched mode of (SiO2)/(silicalite-1)/(SiO2). The gel-free secondary growth methodology bypasses the post-calcination step, avoiding excess energy consumption and possible film damage. Significantly enhanced pervaporation separation was observed with separation factors of 136 and 113, and fluxes of 2.3 and 2.2 kg m-2 h-1 for ethanol/n-butanol aqueous solutions, respectively. In addition, the membrane stability was confirmed by the 14 day pervaporation test.
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Affiliation(s)
- Ruiwen Luo
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - He Ding
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China and Key Laboratory of Superlight Materials and surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
| | - Jiafei Lyu
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Tianyi Fu
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Peng Bai
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Xianghai Guo
- Dept. of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China. and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China and School of Marine Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Michael Tsapatsis
- Dept. of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55414, USA and Dept. of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA and Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, Maryland 21218, USA
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