Synthesis and characterization of mixed ionic-electronic conducting Ca0.8Sr0.2Ti0.7Fe0.3O3-α thin film

被引：13

作者：

Araki, Sadao ^{[1
,2
,3
]}

Hoshi, Yasushi ^{[4
]}

Hamakawa, Satoshi ^{[4
]}

Hikazudani, Susumu ^{[1
]}

Mizukami, Fujio ^{[4
]}

机构：

[1] Hitachi Zosen Corp, Tech Res Inst, Business Promot & Prod Dev Ctr, Taisho Ku, Osaka 5510022, Japan

[2] Kansai Univ, Dept Chem Engn, Suita, Osaka 5648680, Japan

[3] Kansai Univ, High Technol Res Ctr, Suita, Osaka 5648680, Japan

[4] Natl Inst Adv Ind Sci & Technol, Miyagino Ku, Sendai, Miyagi 9838551, Japan

来源：

SOLID STATE IONICS | 2008年 / 178卷 / 33-34期

关键词：

one-component membrane reactor; thin film; oxygen permeation; mixed ionic-electronic conductor; perovskite;

D O I：

10.1016/j.ssi.2007.11.011

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：

Thin dense films of Ca0.8Sr0.2Ti0.7Fe0.3O3-alpha (CSTF) perovskite-type oxide, which is used as an oxide ionic and electronic mixed conductor, were prepared on a CSTF porous substrate using spin coating method. For use as both thin dense film materials and porous substrates, these CSTF materials were prepared using different procedures. A porous substrate was prepared by treating carbon and CSTF composites in air at 1273 K to produce open pores by carbon combustion. The dense film thickness was controlled at 35-96 mu m by varying the spin coating times. The maximum oxygen flux from air to nitrogen through the asymmetric membrane observed at 1223 K was 2.1 ml min(-1) cm(-2) for 35 mu m film thickness. Oxygen permeation rates were inversely related to the film thickness. These results suggest that bulk diffusion controls the permeation of oxide ion in the CSTF thin film. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1740 / 1745

页数：6

共 29 条

[1] Ceramic membrane reactor for converting methane to syngas [J].