Evaluation of perovskites in hollow fibre and disk geometry in catalytic membrane reactors and in oxygen separators

被引：38

作者：

Caro, J.

Wang, H. H.

Tablet, C.

Kleinert, A.

Feldhoff, A.

Schiestel, T.

Kilgus, M.

Koelsch, P.

Werth, S.

机构：

[1] Leibniz Univ Hannover, Inst Phys Chem & Electrochem, D-30167 Hannover, Germany

[2] Fraunhofer Inst Interfacial Engn & Biotechnol, D-70569 Stuttgart, Germany

[3] Inst Appl Chem Berlin Adlershof ACA, D-12489 Berlin, Germany

[4] Uhde GmbH, D-44141 Dortmund, Germany

来源：

CATALYSIS TODAY | 2006年 / 118卷 / 1-2期

关键词：

hollow fibre; disk geometry; oxygen separator; PARTIAL OXIDATION; MISFIT DISLOCATIONS; PERMEATION; METHANE; SURFACE; SYNGAS; MICROSTRUCTURE;

D O I：

10.1016/j.cattod.2005.12.015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Perovskite hollow fibre membranes of the composition BaCoxFeyZr1-x-yO3-delta (BCFZ) were prepared by a spinning process and subsequent sintering. The fibres were successfully tested in the production of pure oxygen and oxygen-enriched air as well as in a catalytic membrane reactor for the partial oxidation of methane to synthesis gas. In addition to BCFZ, for comparison perovskites of the composition Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) and Ba0.5Sr0.5Zn0.2Fe0.8O3-delta (BSZF) as well as SrCo0.8Fe0.2O3-delta (SCF) were prepared and tested. The atomic structure of the grain boundaries and their influence on oxygen transport are discussed. The thermal expansion coefficient is derived from in situ high temperature XRD. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：128 / 135

页数：8

共 37 条

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