Dense ceramic membranes of SrFeCo0.5Oy were prepared by pressing a ceramic

powder prepared by using a sol–gel combustion technique. Oxygen and hydrogen

permeation at high temperature on this material were studied. Measurements were

conducted using a time-dependent permeation method at 1073 to 1273K with

oxygen- and hydrogen-driving pressures ranging from 3 x 102 to 105Pa. The

maximum oxygen-permeated flux at 1273K was 6.5 x 10−3mol/m2s. The activation

energies for the O2-permeation fluxes and diffusivities were 240 and 194kJ/mol,

respectively. Due to the high fragility, the high temperature for the measurements

and the high oxygen permeation through such material, a special membrane holder,

and compression sealing system were designed and realized for the permeation

apparatus.

Oxygen- and Hydrogen-Permeation Measurements on-Mixed Conducting

SrFeCo0.5Oy Ceramic Membrane Material. E.Serra, M.Alvisi, E.Casagrande,

G.Bezzi, C.Mingazzini, A.La Barbera: Renewable Energy, 2008, 33[2], 241-7