Effects of sintering on the properties of La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite hollow fiber membranes / Xiaoyao Tan in Industrial & engineering chemistry research, Vol. 49 N° 6 (Mars 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2895–2901 Titre : Effects of sintering on the properties of La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite hollow fiber membranes Type de document : texte imprimé Auteurs : Xiaoyao Tan, Auteur ; Zhigang Wang, Auteur ; Kang Li, Auteur Année de publication : 2010 Article en page(s) : pp. 2895–2901 Note générale : Industrial Chemistrey Langues : Anglais (eng) Mots-clés : Separation--Hg(II)--Aqueous Solution--Bulk--Liquid--Membrane Résumé : La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) hollow fiber membrane precursors were prepared by spinning a starting suspension containing 68.75 wt % LSCF powders, 6.25 wt % polyethersulfone (PESf), and 25.0 wt % N-methyl-2-pyrrolidinone (NMP) at room temperature using deionized water and tape water as the internal and external coagulants, respectively. High temperature sintering was carried out in a range of 1200−1500 °C to study the influences of the sintering process on the properties of the LSCF hollow fiber membranes including the microstructure, crystalline phase, mechanical strength, as well as the oxygen permeability. Mechanical strength of the LSCF hollow fibers increased with increasing sintering temperature and reached a maximum of 115 MPa at 1500 °C sintering temperature. To obtain gastight LSCF hollow fiber membranes, the sintering temperature must be higher than 1250 °C, and the sintering time must be longer than 2 h. However, higher than 1350 °C sintering temperature would facilitate the formation of sulfate impurity phases, resulting in noticeable reduction of oxygen permeation flux. The optimum sintering temperature should be around 1300 °C, and the sintering time should be within the range of 2−4 h to obtain the gastight and high flux LSCF hollow fiber membranes. Note de contenu : Bibiogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901403u [article] Effects of sintering on the properties of La0.6Sr0.4Co0.2Fe0.8O3−δ perovskite hollow fiber membranes [texte imprimé] / Xiaoyao Tan, Auteur ; Zhigang Wang, Auteur ; Kang Li, Auteur . - 2010 . - pp. 2895–2901. Industrial Chemistrey Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2895–2901 Mots-clés : Separation--Hg(II)--Aqueous Solution--Bulk--Liquid--Membrane Résumé : La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) hollow fiber membrane precursors were prepared by spinning a starting suspension containing 68.75 wt % LSCF powders, 6.25 wt % polyethersulfone (PESf), and 25.0 wt % N-methyl-2-pyrrolidinone (NMP) at room temperature using deionized water and tape water as the internal and external coagulants, respectively. High temperature sintering was carried out in a range of 1200−1500 °C to study the influences of the sintering process on the properties of the LSCF hollow fiber membranes including the microstructure, crystalline phase, mechanical strength, as well as the oxygen permeability. Mechanical strength of the LSCF hollow fibers increased with increasing sintering temperature and reached a maximum of 115 MPa at 1500 °C sintering temperature. To obtain gastight LSCF hollow fiber membranes, the sintering temperature must be higher than 1250 °C, and the sintering time must be longer than 2 h. However, higher than 1350 °C sintering temperature would facilitate the formation of sulfate impurity phases, resulting in noticeable reduction of oxygen permeation flux. The optimum sintering temperature should be around 1300 °C, and the sintering time should be within the range of 2−4 h to obtain the gastight and high flux LSCF hollow fiber membranes. Note de contenu : Bibiogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901403u

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