Improved Synthesis of Hollow Fiber SSZ-13 Zeolite Membranes for High-Pressure CO 2 /CH 4 Separation.

Autor: Peng X; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China., Chen L; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China.; Quzhou Membrane Material Innovation Institute, No. 99 Zheda Road, Quzhou, 324000, P. R. China., You L; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China., Jin Y; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China., Zhang C; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China., Ren S; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China., Kapteijn F; Chemical Engineering Department, Delft University of Technology, Van der Maasweg 9, Delft, 2629 HZ, The, Netherlands., Wang X; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China.; Quzhou Membrane Material Innovation Institute, No. 99 Zheda Road, Quzhou, 324000, P. R. China., Gu X; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, P. R. China.; Quzhou Membrane Material Innovation Institute, No. 99 Zheda Road, Quzhou, 324000, P. R. China.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Jul 29; Vol. 63 (31), pp. e202405969. Date of Electronic Publication: 2024 Jun 24.
DOI: 10.1002/anie.202405969
Abstrakt: High-silica CHA zeolite membranes are highly desired for natural gas upgrading because of their separation performance in combination with superior mechanical and chemical stability. However, the narrow synthesis condition range significantly constrains scale-up preparation. Herein, we propose a facile interzeolite conversion approach using the FAU zeolite to prepare SSZ-13 zeolite seeds, featuring a shorter induction and a longer crystallization period of the membrane synthesis on hollow fiber substrates. The membrane thickness was constant at ~3 μm over a wide span of synthesis time (24-96 h), while the selectivity (separation efficiency) was easily improved by extending the synthesis time without compromising permeance (throughput). At 0.2 MPa feed pressure and 303 K, the membranes showed an average CO 2 permeance of (5.2±0.5)×10 -7  mol m -2  s -1  Pa -1 (1530 GPU), with an average CO 2 /CH 4 mixture selectivity of 143±7. Minimal defects ensure a high selectivity of 126 with a CO 2 permeation flux of 0.4 mol m -2  s -1 at 6.1 MPa feed pressure, far surpassing requirements for industrial applications. The feasibility for successful scale-up of our approach was further demonstrated by the batch synthesis of 40 cm-long hollow fiber SSZ-13 zeolite membranes exhibiting CO 2 /CH 4 mixture selectivity up to 400 (0.2 MPa feed pressure and 303 K) without using sweep gas.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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