Effect of plasma atmosphere on the oxygen transport of mixed ionic and electronic conducting hollow fiber membranes
Perovskite hollow fibers have been used to extract oxygen from different oxygen containing plasmas. The influence of the working length and the temperature on the oxygen transport of (La0.6Ca0.4)(Co0.8Fe0.2)O3-d (LCCF) hollow fiber membranes in an air and a CO2 plasma were investigated and compared with a conventional electrically heated oven system at a similar temperature. High-quality LCCF hollow fiber membranes were prepared via phase inversion spinning and sintering. In the CO2 plasma, the feasibility of the oxygen extraction due to the CO2 splitting according to CO2 CO + ½ O2 was studied. For an active membrane length of 0.5 cm, oxygen permeation values of 17.27 ml min−1 cm−2 in an air plasma at 0.67 kW and 4.97 ml min−1 cm−2 in a CO2 plasma at 1 kW were reached.