Activation in the initial stage of oxygen permeation in SrCo0.9Ta0.1O3-δ

被引：6

作者：

Wei, Yan Ying ^{[1
]}

Zhou, Ling Yi ^{[1
]}

Tang, Jun ^{[1
]}

Li, Zhong ^{[1
]}

Wang, Hai Hui ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2012年 / 23卷 / 01期

关键词：

Membrane; Perovskite; Activation; Unsteady state; Crystal structure; MEMBRANE REACTOR; PEROVSKITE MEMBRANES; COMPOSITE MEMBRANE; PARTIAL OXIDATION; STABILITY; PERMEABILITY; PERFORMANCE; METHANE; SYNGAS; ETHANE;

D O I：

10.1016/j.cclet.2011.09.020

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mixed conducting perovskite oxide SrCo0.9Ta0.1O3-delta (SCT) is synthesized by solid-state reaction method. The activation in the initial stage of oxygen permeation through the SCT membrane is investigated. The results show that the activation in the initial stage of oxygen permeation has activate-memory, the first activation can only help to reduce active time of the next cycles, but it is helpless to increase the final oxygen permeation flux. XRD characterization shows that the imperfect perovskite phase structure is gradually improved and the crystal lattice has made some self-adjustment under the permeation conditions, therefore, the oxygen permeation flux of SCT disk membrane increases gradually and till it reaches a steady state. (C) 2011 Hai Hui Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

引用

页码：113 / 116

页数：4

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