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Preparationand characterization of oxygen permeable membrane of SrFeCu_(0.2)O_x

机译：SrFCu（0.2）O_x透氧膜的制备与表征

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Dense ceramic mixed-conducting oxygen-permeable membrane materials have the potential to be incorporated into a variety of technological systems, including selective oxygen permeable membranes, gas sensors, membrane reactos and solid oxide fuel cells (SOFC). So the oxygen-permeable membranes are getting more attention. In previous work, most attention was paid to matrials that have perovskite structure (for example, la-Sr-Co-Fe-O system). In the present work, a Sr-Fe-Cu-O system ahs been investigated. And SrFeCu_(0.2)o_x was successfully synthesized by solid-state reaction. The factors that influenced the syntheses were discussed. the structure of SrFeCu_(0.2)O_x was determined by XRD. It's found that ArFeCu_(0.2)O_x has a main cubic phase together with a small quantity of remaining CuO, and lattice constant a_0=0.3846 nm. Oxygen permeation flux was measured by the GC method. The oxygen permeation flux is 1.70X10~(-6) mol/cm~2centre dots (STP) at 825deg C, showing that SrFeCu_(0.2)O_x is a promising oxygen permeable material.
机译：致密的陶瓷混合导电透氧膜材料具有被整合到各种技术系统中的潜力，包括选择性透氧膜，气体传感器，膜反应器和固体氧化物燃料电池（SOFC）。因此透氧膜越来越受到关注。在以前的工作中，最关注的是具有钙钛矿结构的材料（例如la-Sr-Co-Fe-O系统）。在目前的工作中，对Sr-Fe-Cu-O系统进行了研究。通过固相反应成功合成了SrFeCu_（0.2）o_x。讨论了影响合成的因素。 XRD确定了SrFeCu_（0.2）O_x的结构。发现ArFeCu_（0.2）O_x具有主立方相以及少量残留的CuO，晶格常数a_0 = 0.3846 nm。通过GC方法测量透氧通量。氧在825℃下的渗透通量为1.70X10〜（-6）mol / cm〜2中心点（STP），表明SrFeCu_（0.2）O_x是一种有希望的透氧材料。

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