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Jian Song,Claudia Li,Shao Zhang,Kai Wang,Bo Meng,Xiaoyao Tan,Jaka Sunarso,Shaomin Liu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.107 No.-
BaCeO3-based ceramics are a unique class of perovskites that exhibit protonic and oxygen ionic conduction,which are ideal for high temperature hydrogen separation applications. This work features Sc-dopedBCFe composites with nominal composition of BaCe0.70Fe0.30-xScxO3d (BCFSc) (x = 0, 0.05, 0.1, 0.15, and0.2) that exhibit enhanced thermal, chemical, and mechanical stability. The BCFSc20 (x = 0.20) hollowfiber membranes demonstrated the highest hydrogen and oxygen fluxes among the Sc-doped compositesof up to 0.32 and 0.20 mL min1 cm2, respectively, at 1000 C. The BCFSc20 hollow fibers also displayedexcellent stability under the hydrogen and oxygen permeation environments, while the permeation performanceof the other BCFSc samples with low Sc content gradually deteriorated over the 120-h stabilitytest.