应用化学2009，Vol.26Issue(11)：1328-1331,4.
SrFe_(0.6)Cu_(0.3)Ti_(0.1)O_(3-δ)混合导体透氧材料的稳定性
Stability of SrFe_(0.6)Cu_(0.3)Ti_(0.1)O_(3-δ) Mixed Conducting Membrane Material
摘要
Abstract
SrFe(Cu,Ti) O_(3-δ) mixed conducting membrane materials were synthesized by citric acid complexing method. The stabilities of the materials were studied by means of XRD, O_2-TPD, H_2-TPR and SEM. It was found that phase decomposition occurred in SrFe_(0.7)Cu_(0.3)O_(3-δ) under a low oxygen partial pressure and a minor phase SrCuO_2 was formed. The addition of Ti~(4+) greatly enhanced the structure stability of the material, and SrFe_(0.6) Cu_(0.3) Ti_(0.1) O_(3-δ) maintained single-phased perovskite structure. H_2-TPR and O_2-TPD results showed that the addition of Ti~(4+) increased the initial oxygen desorption temperature of the material, and the reduction temperature of the other metal ions. Slight phase decomposition was found on the He-side surface of SrFe_(0.6)Cu_(0.3)Ti_(0.1)O_(3-δ) membrane after oxygen permeating test and fresh small grains congregated at the boundary of the initial grains. SrFe_(0.6)Cu_(0.3)Ti_(0.1)O_(3-δ) exhibits a high stability during 66 h oxygen permeating process.关键词
透氧/混合导体/钙钛矿/相稳定性Key words
oxygen permeation/mixed conductor/perovskite/phase stability分类
化学化工引用本文复制引用
张恒,王婷婷,林维明..SrFe_(0.6)Cu_(0.3)Ti_(0.1)O_(3-δ)混合导体透氧材料的稳定性[J].应用化学,2009,26(11):1328-1331,4.基金项目
广东省自然科学基金(030514)、广东省科技计划(2004B33401006)资助项目 （030514）
