Stability of SrFeO3-based materials in H2O/CO2-containing atmospheres at high temperatures and pressures

被引：24

作者：

Kaus, Ingeborg ^{[1
]}

Wiik, Kjell

Krogh, Bente

Dahle, Marit

Hofstad, Karina H.

Aasland, Siv

机构：

[1] Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway

[2] Statoil Res Ctr, Trondheim, Norway

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 07期

关键词：

D O I：

10.1111/j.1551-2916.2007.01727.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The chemical stability of SrFeO3-based perovskites in H2O- and CO2-containing atmospheres at high temperatures and pressures has been examined. The extent of reaction as a function of pCO(2), pH(2)O, temperature, and time has been determined. Either strontium carbonate or Sr(OH)(2).H2O was observed on sample surfaces after exposure. Observation of two different reaction-rate behaviors could be explained by the formation of different products. The stability of the perovskite has been found to increase when the activity of Sr is decreased. Chemical stability in H2O/CO2 is important to understand in order to use these membrane materials for syngas production.

引用

页码：2226 / 2230

页数：5

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