Exploring the processing of tubular chromite-and zirconia-based oxygen transport membranes

Abstract

Tubular oxygen transport membranes (OTMs) that can be directly integrated in high temperature processes have a large potential to reduce CO2 emissions. However, the challenging processing of these multilayered tubes, combined with strict material stability requirements, has so far hindered such a direct integration. We have investigated if a porous support based on (Y2 O3)0.03 (ZrO2)0.97 (3YSZ) with a dense composite oxygen membrane consisting of (Y2 O3)0.01 (Sc2 O3)0.10 (ZrO2)0.89 (10Sc1YSZ) as an ionic conductor and LaCr0.85 Cu0.10 Ni0.05 O3−δ (LCCN) as an electronic conductor could be fabricated as a tubular component, since these materials would provide outstanding chemical and mechanica..