SrCo(0．8)Fe(0．2)O(3-δ)管状非对称陶瓷膜的制备与氧渗透研究  

Preparation and Oxygen Permeation for SrCo_(0.8)Fe_(0.2)O_(3-δ) Tubular Asymmetric Membrane

作　　者：樊传刚[1] 黄祥贤[1] 刘卫[2] 陈初升[2] 

机构地区：[1]安徽工业大学材料科学与工程学院,马鞍山243002 [2]中国科学技术大学材料科学与工程系,合肥230026

出　　处：《无机材料学报》2008年第6期1221-1224,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金重点项目(50332040)

摘　　要：用共烧法制备了以(SrCo_(0.8)Fe_(0.2)O_(3-δ))_(0.85)(SrSnO_3)_(0.15)(SCF-SS)多孔层为支撑体和SrCo_(0.8)Fe_(0.2)O_(3-δ) (SCF)致密层为顶层膜的管状非对称透氧陶瓷膜;并对其相组成、微形貌以及氧分离性能进行了表征.研究发现:SCF和SCF-SS之间有较好的兼容性;当共烧温度为1150℃时,获得的非对称陶瓷膜的致密层厚度为50μm,支撑体的显气孔率为19.3%;900和800℃时,非对称膜样品(壁厚1.4mm,外径10.3mm,长度为4.1cm)的氧渗透率分别为1.91和1.01mL·cm^(-2)·min^(-1),分别比同样几何尺寸的SCF对称膜样品高24%和36%.The tubular asymmetric membrane（TAM）was prepared by co-firing method with dense top layer of SrCo（0.8）Fe（0.2）O（3-δ）（SCF）and porous substrate layer of（SrCo（0.8）Fe（0.2）O（3-δ））（0.85）（SrSnO3）（0.15） （SCF-SS）.Its phase composition,morphology and oxygen permeability were investigated.The results show that SCF layer and SCF-SS layer have desirable compatibility for configuration of asymmetric membrane.The resulting TAM sample sintered at 1150℃has the dense layer of SCF with thickness of 50μm and the SCF-SS substrate with apparent porosity of 19.3%.The permeation rates of the resulting TAM are 1.91mL·cm（-2）·min（-1）at 900℃and 1.01mL·cm（-2）·min（-1）at 800℃,respectively,which are 24% and 36% higher than those of the SCF tubular symmetric membrane（TSM）with same size（wall thickness of 1.4mm,outer diameter of 10.3mm,and length of 4.1cm）.

关 键 词：管状非对称陶瓷膜 氧分离 离子-电子混合导电 钙钛矿 

分 类 号：TQ174[化学工程—陶瓷工业]