Tubular Dense Perovskite Type Membranes. Preparation, Sealing, and Oxygen Permeation Properties

摘要: Tubular dense perovskite type membranes were prepared by isostatic pressing and plastic extrusion. The resulting tubular La0.6Sr0.4Co0.2Fe0.8O3-δ membrane extrusion (designated as PE-LSCF) has a lower density oxygen permeation flux compared with that IP-LSCF). A ceramic binder developed our research center provided reliable sealing for the at high temperature. increases increasing temperature, value is about 0.13 cm3/cm2 min (STP) 1123 K. activation energy 168 kJ/mol temperature range of 1073−1173 X-ray diffraction analysis over 110 h operation indicated SrSO4, CoSO4, SrO, Co2O3, La2O3 formed on surfaces membrane, especially PE-LSCF because interaction trace SO2 in air helium segregation surface elements.