用共烧法制备了以(SrCo(0.8)Fe(0.2)O(3-δ))(0.85)(SrSnO3)(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).