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Ba0.5Sr0.5Co0.8Fe0.2O3-δ ceramic hollow-fiber membranes for oxygen permeation
Self‐supported asymmetric hollow‐fiber membranes of mixed oxygen‐ionic and electronic conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) were prepared by a combined phase‐inversion and sintering technique. The starting inorganic powder was synthesized by combined EDTA–citrate complexing process f...
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Published in: | AIChE journal 2006-10, Vol.52 (10), p.3452-3461 |
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creator | Liu, S. Tan, X. Shao, Z. Diniz da Costa, J. C. |
description | Self‐supported asymmetric hollow‐fiber membranes of mixed oxygen‐ionic and electronic conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) were prepared by a combined phase‐inversion and sintering technique. The starting inorganic powder was synthesized by combined EDTA–citrate complexing process followed by thermal treatment at 600°C. The powder was dispersed in a polymer solution and then extruded into hollow‐fiber precursors through a spinneret. The fiber precursors were sintered at elevated temperatures to form gastight membranes, which were characterized by SEM and gas permeation tests. Performance of the hollow fibers in air separation was both experimentally and theoretically studied at various conditions. The results reveal that the oxygen permeation process was controlled by the slow oxygen surface exchange kinetics under the investigated conditions. The porous inner surface of the prepared perovskite hollow‐fiber membranes considerably favored the oxygen permeation. The maximum oxygen flux measured was 0.031 mol·m−2·s−1 at 950°C with the sweep gas flow rate of 0.522 mol·m−2·s−1. To improve the oxygen flux of BSCF perovskite membranes, future work should be focused on surface modification rather than reduction of the membrane thickness. © 2006 American Institute of Chemical Engineers AIChE J, 2006 |
doi_str_mv | 10.1002/aic.10966 |
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C.</creator><creatorcontrib>Liu, S. ; Tan, X. ; Shao, Z. ; Diniz da Costa, J. C.</creatorcontrib><description>Self‐supported asymmetric hollow‐fiber membranes of mixed oxygen‐ionic and electronic conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) were prepared by a combined phase‐inversion and sintering technique. The starting inorganic powder was synthesized by combined EDTA–citrate complexing process followed by thermal treatment at 600°C. The powder was dispersed in a polymer solution and then extruded into hollow‐fiber precursors through a spinneret. The fiber precursors were sintered at elevated temperatures to form gastight membranes, which were characterized by SEM and gas permeation tests. Performance of the hollow fibers in air separation was both experimentally and theoretically studied at various conditions. The results reveal that the oxygen permeation process was controlled by the slow oxygen surface exchange kinetics under the investigated conditions. The porous inner surface of the prepared perovskite hollow‐fiber membranes considerably favored the oxygen permeation. The maximum oxygen flux measured was 0.031 mol·m−2·s−1 at 950°C with the sweep gas flow rate of 0.522 mol·m−2·s−1. 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C.</creatorcontrib><title>Ba0.5Sr0.5Co0.8Fe0.2O3-δ ceramic hollow-fiber membranes for oxygen permeation</title><title>AIChE journal</title><addtitle>AIChE J</addtitle><description>Self‐supported asymmetric hollow‐fiber membranes of mixed oxygen‐ionic and electronic conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) were prepared by a combined phase‐inversion and sintering technique. The starting inorganic powder was synthesized by combined EDTA–citrate complexing process followed by thermal treatment at 600°C. The powder was dispersed in a polymer solution and then extruded into hollow‐fiber precursors through a spinneret. The fiber precursors were sintered at elevated temperatures to form gastight membranes, which were characterized by SEM and gas permeation tests. Performance of the hollow fibers in air separation was both experimentally and theoretically studied at various conditions. The results reveal that the oxygen permeation process was controlled by the slow oxygen surface exchange kinetics under the investigated conditions. The porous inner surface of the prepared perovskite hollow‐fiber membranes considerably favored the oxygen permeation. The maximum oxygen flux measured was 0.031 mol·m−2·s−1 at 950°C with the sweep gas flow rate of 0.522 mol·m−2·s−1. To improve the oxygen flux of BSCF perovskite membranes, future work should be focused on surface modification rather than reduction of the membrane thickness. © 2006 American Institute of Chemical Engineers AIChE J, 2006</description><subject>air separation</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>hollow-fiber membrane</subject><subject>Membrane separation (reverse osmosis, dialysis...)</subject><subject>mixed conducting ceramic</subject><subject>Organic polymers</subject><subject>perovskite membrane</subject><subject>Physicochemistry of polymers</subject><subject>Properties and characterization</subject><subject>Sintering, pelletization, granulation</subject><subject>Solid-solid systems</subject><subject>Solution and gel properties</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNpFUEtOwzAUtBBIlMKCG2QDu6T-xLG9LBEtlUq7oAh2lpO-gCFpit2q7b04B2fCtAg27zczT6NB6JLghGBMe8aWYVBZdoQ6hKci5grzY9TBGJM4HMgpOvP-LWxUSNpBkxuDE_7gQslbnMgB4IROWfz1GZXgTGPL6LWt63YTV7YAFzXQFM4swEdV66J2u3uBRbQE14BZ2XZxjk4qU3u4-O1d9Di4neV38Xg6HOX9cWwpV1mcKTEXFS1BzYEyibEsDAEuBKlkIQknEhgIEgDBjRQpqwwlihYFSVWZZYR10fXh79K1H2vwK91YX0JdB2vt2muqUklwKgPx6pdofGnqKngvrddLZxvjdppIkmaM08DrHXgbW8PuH8f6J1YdYtX7WHV_lO-HoIgPCutXsP1TGPeuM8EE10-Tob5X-Wz2zGYas298y3h9</recordid><startdate>200610</startdate><enddate>200610</enddate><creator>Liu, S.</creator><creator>Tan, X.</creator><creator>Shao, Z.</creator><creator>Diniz da Costa, J. 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C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2596-697d7f2ce9de238008ba1e5771f8b81518e3e7180075a8743fa2192bb149c6613</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>air separation</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>hollow-fiber membrane</topic><topic>Membrane separation (reverse osmosis, dialysis...)</topic><topic>mixed conducting ceramic</topic><topic>Organic polymers</topic><topic>perovskite membrane</topic><topic>Physicochemistry of polymers</topic><topic>Properties and characterization</topic><topic>Sintering, pelletization, granulation</topic><topic>Solid-solid systems</topic><topic>Solution and gel properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, S.</creatorcontrib><creatorcontrib>Tan, X.</creatorcontrib><creatorcontrib>Shao, Z.</creatorcontrib><creatorcontrib>Diniz da Costa, J. C.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>AIChE journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, S.</au><au>Tan, X.</au><au>Shao, Z.</au><au>Diniz da Costa, J. C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ba0.5Sr0.5Co0.8Fe0.2O3-δ ceramic hollow-fiber membranes for oxygen permeation</atitle><jtitle>AIChE journal</jtitle><addtitle>AIChE J</addtitle><date>2006-10</date><risdate>2006</risdate><volume>52</volume><issue>10</issue><spage>3452</spage><epage>3461</epage><pages>3452-3461</pages><issn>0001-1541</issn><eissn>1547-5905</eissn><coden>AICEAC</coden><abstract>Self‐supported asymmetric hollow‐fiber membranes of mixed oxygen‐ionic and electronic conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) were prepared by a combined phase‐inversion and sintering technique. The starting inorganic powder was synthesized by combined EDTA–citrate complexing process followed by thermal treatment at 600°C. The powder was dispersed in a polymer solution and then extruded into hollow‐fiber precursors through a spinneret. The fiber precursors were sintered at elevated temperatures to form gastight membranes, which were characterized by SEM and gas permeation tests. Performance of the hollow fibers in air separation was both experimentally and theoretically studied at various conditions. The results reveal that the oxygen permeation process was controlled by the slow oxygen surface exchange kinetics under the investigated conditions. The porous inner surface of the prepared perovskite hollow‐fiber membranes considerably favored the oxygen permeation. The maximum oxygen flux measured was 0.031 mol·m−2·s−1 at 950°C with the sweep gas flow rate of 0.522 mol·m−2·s−1. To improve the oxygen flux of BSCF perovskite membranes, future work should be focused on surface modification rather than reduction of the membrane thickness. © 2006 American Institute of Chemical Engineers AIChE J, 2006</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/aic.10966</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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subjects | air separation Applied sciences Chemical engineering Exact sciences and technology hollow-fiber membrane Membrane separation (reverse osmosis, dialysis...) mixed conducting ceramic Organic polymers perovskite membrane Physicochemistry of polymers Properties and characterization Sintering, pelletization, granulation Solid-solid systems Solution and gel properties |
title | Ba0.5Sr0.5Co0.8Fe0.2O3-δ ceramic hollow-fiber membranes for oxygen permeation |
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