Oxygen Permeation of a Dense/Porous Asymmetric Membrane Using La_(0.6)Ca_(0.4)CoO_(3-delta)-BaFe_(0.975)Zr_(0.025)O_(3-delta)System

摘要

To achieve a high oxygen permeation rate at medium and high temperature,an asymmetrically structured membrane,in which a thin dense layer(30 mu m)made of La_(0.6)Ca_(0.4)CoO_(3-delta)(LCC)and BaFe_(0.975)Zr_(0.025)O_(3-delta)(BFZ)was formed on a porous LCC support,was fabricated and tested for its oxygen permeability.The oxygen permeation flux significantly increased by mixing BFZ with LCC and reached a fairly high value of 1.60 cm~3 min~(-1)cm~(-2)even at 780°C.