高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

SrCo0.8Fe0.2O3-δ管状非对称陶瓷膜的制备与氧渗透研究

樊传刚1, 黄祥贤1, 刘卫2, 陈初升2   

  1. 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
  • 收稿日期:2007-12-25 修回日期:2008-03-11 出版日期:2008-11-20 网络出版日期:2008-11-20

Preparation and Oxygen Permeation for SrCo0.8Fe0.2O3-δ Tubular Asymmetric Membrane

FAN Chuan-Gang1, HUANG Xiang-Xian1, LIU Wei2, CHEN Chu-Sheng2   

  1. 1. School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, China; 2. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2007-12-25 Revised:2008-03-11 Published:2008-11-20 Online:2008-11-20

PDF (PC)

2210

摘要： 用共烧法制备了以(SrCo0.8Fe0.2O3-δ)0.85(SrSnO3)0.15 (SCF-SS)多孔层为支撑体和SrCo0.8Fe0.2O3-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%.

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

Abstract: The tubular asymmetric membrane (TAM) was prepared by co-firing method with dense top layer of SrCo0.8Fe0.2O3-δ(SCF) and porous substrate layer of (SrCo0.8Fe0.2O3-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).

Key words: tubular asymmetric membrane, oxygen permeation, mixed ion and electron conducting, perovskite

中图分类号: