Oxygen surface exchange in mixed ionic electronic conductor membranes

被引：60

作者：

Kim, S

Yang, YL

Jacobson, AJ

Abeles, B

机构：

[1] Univ Houston, Dept Chem, Houston, TX 77204 USA

[2] Univ Houston, Mat Res Sci & Engn Ctr, Houston, TX 77204 USA

来源：

SOLID STATE IONICS | 1999年 / 121卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

oxygen surface exchange coefficients; net surface exchange flux; gas-MIEC interfaces;

D O I：

10.1016/S0167-2738(98)00389-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We discuss the different oxygen surface exchange coefficients and the net surface exchange flux i = c(i)k(i0)[exp(n mu(8)/RT) - exp(2n mu/RT)] at gas-MIEC oxide interfaces, where k(i) = k(i0)(p/p(0))(n) is the surface exchange coefficient, derived from isotope exchange experiments, p is the oxygen pressure, mu(s) and mu are the chemical potentials of the gas and of the ion-electron hole pairs at the interface and c(i) is the oxygen ion concentration. The model is applied to oxygen permeation in planar and tubular membranes. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：31 / 36

页数：6

共 10 条

[1] IMPORTANCE OF THE SURFACE EXCHANGE KINETICS AS RATE-LIMITING STEP IN OXYGEN PERMEATION THROUGH MIXED-CONDUCTING OXIDES [J].