Author/Authors :
Ganji Babakhani، Ensiye نويسنده Gas Research Division, Research Institute of Petroleum Industry, Tehran, Iran , , Heidari، - نويسنده Chemical Engineering Department, Sharif University of Technology, Tehran, Iran , , Zamanian، - نويسنده Gas Research Division, Research Institute of Petroleum Industry, Tehran, Iran , , Amanipour، - نويسنده Chemical Engineering Department, Sharif University of Technology, Tehran, Iran ,
Abstract :
A mixed proton–electron conducting perovskite was synthesized by liquid-citrate method and the corresponding membrane was prepared by pressing followed by sintering. The hydrogen permeability of BaCe0.9Yb0.1O3-? was studied as a function of temperature and hydrogen partial pressure (PH2) gradient. Using 100% dry hydrogen at 1173 K, the hydrogen permeation rate of dense membranes (1.63 mm thick) for a mixture of 60% H2/He was 0.000293 mol/(m2 s). The phase structure of powder was characterized by X-ray diffraction and thermogravimetry (TG). Scanning electron microscopy (SEM) was used to investigate the microstructure of sintered membrane. Activation energy estimated with Arrhenius equation was 29 kJ/mol.
