Oxygen permeation through perovskitic membranes: The influence of steam in the sweep on the permeation performance
F. Thaler, M. Müller, R. Spatschek,
Volume: 3 (3). Pages: 1126--1137
DOI: 10.3934/matersci.2016.3.1126
Published: 2016
Abstract
Experimental approaches are employed for the understanding of oxygen
permeation through membranes. For the experiments, different oxygen
partial pressures are applied to both sides of a BSCF5582 membrane,
using synthetic air as feed and vacuum or steam/argon as sweep gas.
Beside the partial pressure gradient, the permeation rate depends
on the temperature and the membrane thickness. Sufficient permeation
rates can be achieved by sweeping the membrane with water vapor (steam)
instead of a noble gas, which is optimized by ascending water content
in the sweep gas. The influence of the steam content on the permeation
performance as well as microstructural changes are demonstrated.