应用相转化法制备了La0.6Sr0.4Co0.2Fe0.8O3-α(LSCF)氧离子-电子混合传导陶瓷中空纤维膜, 该陶瓷中空纤维膜具有由多孔层和致密层组成的非对称结构. 经
1300℃的4h烧结后, 可得到致密的LSCF陶瓷中空纤维膜. 烧结后, LSCF粒度变大而其钙钛矿型晶相结构没有发生变化. LSCF中空纤维膜的透氧速率大大高于一般管式膜的氧透量.
A mixed oxide-electron conducting ceramic, La0.6Sr0.4Co0.2Fe0.8O3-α (LSCF) hollow fiber membrane was prepared by the phase inversion technique. The ceramic hollow
fibre membranes have the asymmetric structure with spongy and dense layers. The dense hollow fibre membranes without defects can be obtained after sintering at 1300℃ for 4h. The crystalline
grain of LSCF in the membranes becomes larger after sintering at high temperatures, however the perovskite crystalline structure doesn’t change. The permeability of LSCF hollow fiber membrane is
higher than that of the common tube membrane.
参考文献
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