Journal
CHEMICAL ENGINEERING SCIENCE
Volume 141, Issue -, Pages 119-124Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2015.10.035
Keywords
Zeolitic imidazolate framework; ZIF-8; Membrane; Reproducibility; Propylene/propane
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Funding
- National Natural Science Foundation of China [21406106]
- Jiangsu Provincial NSFC [BK20130928]
- Foundation of Jiangsu Educational Committee of China [14KJB530006]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Zeolitic imidazolate framework-8 (ZIF-8) membrane has shown great potential for propylene/propane separation based on molecular sieving mechanism. Although diverse synthesis strategies were applied to prepare ZIF-8 membranes, it is still a challenge for reproducible fabrication of high-quality membranes. In this study, high-quality ZIF-8 membranes were prepared through hydrothermal synthesis under the partial self-conversion of sputter-coated ZnO layer on porous alpha-alumina supports. The reproducibility was significantly improved, compared with that from sol-gel coated ZnO layer, due to the highly controllable sputtering deposition of ZnO precursor. The relationship between the quality of as-synthesized membrane and amount of deposited ZnO was also determined. The effect of pressure drop in C3H6/C3H8 separation on separating performance was also examined. (C) 2015 Elsevier Ltd. All rights reserved.
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