Oxygen selective ceramic hollow fiber membranes |
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| Affiliation: | 1. Advanced Materials & Devices Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Daejeon 305-343, Republic of Korea;2. Department of Material Science and Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea;1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry & Chemical Engineering, Nanjing Tech University, Nanjing 210009, China;2. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;3. Department of Chemical Engineering, Curtin University, Perth WA 6458, Australia;4. College of Energy, Nanjing Tech University, Nanjing 210009, China;1. Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore;2. Chemical Engineering Department and School of Green Chemistry and Engineering, University of Toledo, 2801 West Bancroft Street, Toledo, OH 43606-3390, United States;3. Elah Strategies, 1571 Treherne Court, Chesterfield, MO 63017-5527, United States;2. School of Materials Science and Engineering & Key Laboratory of Inorganic Membranes, Jingdezhen Ceramic Institute, Jingdezhen 333403, China;3. Department of Chemical Engineering, Curtin University, Perth, WA 6845, Australia;1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China;2. University of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Oxygen ion conducting Ba0.5Sr0.5Co0.8Fe0.2O3−δ hollow fiber membranes with o.d. 1.15 mm and i.d. 0.71 mm were fabricated using a sequence of extrusion, gelation, coating and sintering steps. The starting ceramic powder was synthesized by combined EDTA–citrate complexing followed by thermal treatment at 900 °C. The powder was then dispersed in a polymer solution, and extruded through a spinerette. After gelation, an additional thin coating of the ceramic powder was applied on the fiber, and sintering was carried out at 1190 °C to obtain the final ceramic membrane. The fibers were characterized by SEM, and tested for air separation at ambient pressure and at temperatures between 700 and 950 °C. The maximum oxygen flux measured was 5.1 mL/min/cm2 at 950 °C. |
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