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Preparation of dual-phase composite BaCe0.8Y0.2O3/Ce0.8Y0.2O2 and its application for hydrogen peimeation
【文件类型】 【消费金额】2.4 【文章页数】8 【会员操作】  
【文章作者】Liu, Yongguang;Dai, Lei;Zhang, Wenjing;Zhou, Huizhu;Li, Yuehua;Wang, Ling
【文章摘要】      Dual-phase ceramic membranes composed of BaCe0.8Y0.2O3 (BCY) and Ce0.8Y0.2O2 (CYO) were successfully synthesized by solid state reaction method for hydrogen permeation. The influences of the BCY/CYO volume ratios on phase composition, microstructure, chemical stability and electrical property were investigated. The hydrogen permeation of the dual-phase composite was characterized as a function of temperature and feed side hydrogen partial pressure. The results showed that there was no reaction between the two constituent oxides observed under the preparation conditions. The dual-phase composite with different BCY/CYO volume ratios after sintering at 1550 degrees C exhibited dense structure, as well as good stability in 4% H-2/Ar, wet Ar and pure CO2 atmosphere. The conductivity of the dual -phase composite increased with the content of CYO increasing and 30BCY-70CYO exhibited the highest total conductivity of 2.6 x 10(-2) S cm(-1) at 800 degrees C in 4% H-2/Ar. The hydrogen permeability of 30BCY-70CYO sample was improved as the temperature and the hydrogen partial pressure in feed gas increased. The hydrogen permeation flux of 1.7 mu mol cm(-2) s(-1) was achieved at 850 degrees C. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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【卷】42 【ISSUE】5 【ISSUEID】815C0073     【文章期份】2016    【发布日期】2016/8/11 17:02:47    点击率:0    打印    关闭
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