Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 44, Issue 41, Pages 23107-23119Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.07.038
Keywords
Zeolite membrane; CHA membrane; SSZ-13 membrane; Oil-bath heating; Rapid thermal processing; CO2-CH4 separation
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Funding
- National 863 Project [2012AA050104]
- Advanced Coal Project [XDA07040400]
- Zhihong Scholar Project of Shanghai University of Engineering Science
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Traditionally, zeolite membranes were prepared using oven heating which usually resulted in lengthy synthesis time and thick membrane. Previous result indicated that oil-bath heating can significantly reduce the synthesis time and membrane thickness of SAPO-34 membrane due to the elimination of thermal-lag. SSZ-13 membrane was prepared using oil-bath heating method. Significant reduction on synthesis time (from 2 to 6 d to 2 h) and membrane thickness (from 5 to 10 mu m-1.5 mu m) were realized, which is the result of enhanced nucleation and crystallization from ultrafast heat transfer of oil-bath heating. Template removal was realized with an optimized rapid thermal processing method (O-RTP). Outstanding CO2-CH4 separation performance was obtained. The high permeance mainly comes from the thinner membrane. The high selectivity can be attributed to O-RTP, which strengthened the bonding between zeolite crystals and minimized thermal exposure time. The combination of oil-bath heating and O-RTP led to high performance SSZ-13 membrane. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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