Abstract
This article is devoted to the development of the direct resistive heating of oxygen transport membranes technique. In this case, DC was selected to perform direct heating. The effect of DC on the oxygen fluxes and the microstructure of the membrane was studied. It is shown that in the short-term experiment with DC, a positive significant effect on the oxygen transport was found, while sample exposure under the influence of DC for a long period of time had a significant negative effect on the microstructure of the membrane.
Highlights
Oxygen-permeable (OP) membranes that are composed of oxides with mixed ionic-electronic conductivity (MIEC) have found applications in various innovative technologies
Earlier [6,7], it was shown the promise of using AC (50 Hz frequency) for the direct heating of hollow fiber membranes (HFMs), which improves their performance and efficiency of temperature control
Research is devoted to the development of this technique, namely to the study of AC/DC on the heating process of OP HFMs
Summary
Oxygen-permeable (OP) membranes that are composed of oxides with mixed ionic-electronic conductivity (MIEC) have found applications in various innovative technologies. Earlier [6,7], it was shown the promise of using AC (50 Hz frequency) for the direct heating of hollow fiber membranes (HFMs), which improves their performance and efficiency of temperature control. In this case, the membranes with mixed oxygen-electronic conductivity are both a heater and an oxygen separator. Research is devoted to the development of this technique, namely to the study of AC/DC on the heating process of OP HFMs. The long term stability of the AC/DC-heated Ba0.5 Sr0.5 Co0.7 Fe0.2 Mo0.1 O3-δ (BSCFM10) HFMs is studied. It is shown that direct DC heating leads to the degradation of the membrane surface, which negatively affects the functional characteristics of the material
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