Preparation of dual-phase composite BaCe0.8Y0.2O3/Ce0.8Y0.2O2 and its application for hydrogen peimeation

被引：26
作者：
Liu, Yongguang [1 ,2 ]
Dai, Lei [1 ,2 ]
Zhang, Wenjing [1 ]
Zhou, Huizhu [1 ]
Li, Yuehua [1 ]
Wang, Ling [1 ,2 ]
机构：
[1] North China Univ Sci & Technol, Coll Chem Engn, Tangshan 063009, Peoples R China
[2] Hebei Prov Key Lab Inorgan & Nonmet Mat, Tangshan 063009, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2016年 / 42卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Electrical conductivity; BaCe0.8Y0.2O3; Ce0.8Y0.2O2; Dual phase composite; Hydrogen permeation; CHEMICAL-STABILITY; PROTON CONDUCTORS; PERMEATION; MEMBRANES; PD; CONDUCTIVITY; PERMEABILITY; TRANSPORT;
D O I：
10.1016/j.ceramint.2016.01.036
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：
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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页码：6391 / 6398
页数：8
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