Ce0.8Y0.2O2-δ-BaCe0.8Y0.2O3-δ Dual-Phase Hollow Fiber Membranes for Hydrogen Separation

Partial oxidation of methane (POM) is a prominent pathway for syngas production, wherein the hydrogen in product can be recovered directly from reaction system using (H2)-permeable membrane. Enhancing efficiency this H2 separation process current major challenge. In study, Ce0.8Y0.2O2-δ-BaCe0.8Y0.2O3-δ (YDC-BCY) hollow fiber (HF) membranes were developed and characterized their permeation fluxes. Firstly, YDC BCY ceramic powders synthesized sol-gel method, followed by fabrication YDC-BCY dual-phase HF combined phase inversion–sintering process. Characterization SEM, powder XRD, EDS, electrical conductivity tests confirmed phases prepared membranes. Well-structured with uniform particle sizes obtained after calcination at 900 °C. With addition 1 wt.% Co2O3 as sintering aid, membrane achieved densification 1500 Subsequently, influences sweep gas composition temperature on YDC/BCY molar ratios 2:1, 3:1, 4:1 investigated. At 1000 °C sweep-gas flow rate 120 mL·min−1, ratio exhibited peak flux 0.30 mL·min−1 cm−2. There significant potential improving membranes, future efforts aimed reducing dense layer thickness enhancing material’s electronic proton conductivities.