BaCo0.7Fe0.2Nb0.1O3-δ钙钛矿型混合导体透氧膜的性能

上海大学学报(自然科学版) ›› 2010, Vol. 16 ›› Issue (1): 43-47.

BaCo_0.7Fe_0.2Nb_0.1O_3-δ钙钛矿型混合导体透氧膜的性能

黄少卿，丁伟中，沈培俊，杨志彬，周宇鼎，张玉文

（上海大学材料科学与工程学院，上海 200072）

收稿日期:2008-11-05 出版日期:2010-02-28 发布日期:2010-02-28
通讯作者: 丁伟中(1952～)，男，教授，博士生导师,博士,研究方向为高温固体电解质. E-mail:wzhding@public7.sta.net.cn
基金资助:
国家高技术研究发展计划（863计划）资助项目（2006BA103A05）；上海市科委重点科研资助项目（06DZ12212）；先进钢铁材料技术国家工程研究中心资助项目（中050209）

Properties of BaCo_0.7Fe_0.2Nb_0.1O_3-δ PerovskiteType Mixed Conducting Oxygen-Permeation Membrane

HUANG Shao-qing,DING Wei-zhong,SHEN Pei-jun,YANG Zhi-bin,ZHOU Yu-ding,ZHAN Yu-we

(School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China)

Received:2008-11-05 Online:2010-02-28 Published:2010-02-28

摘要/Abstract

摘要：

混合导体固体透氧膜与POM制氢工艺相耦合，可以较大幅度地降低制氢成本.由于透氧膜在高温、强还原性气氛下工作，仅仅具有较高的透氧能力并不能满足实际应用需求，还必须具有较高的化学稳定性.通过O₂TPD，CO₂TG及透氧实验研究了两种透氧能力最高的膜材料BaCo_0.7Fe_0.2Nb_0.1O_3-δ及Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ.研究发现，由于Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ钙钛矿中A位的Sr²⁺被Ba²⁺取代及B位的Co⁴⁺部分被Nb⁵⁺取代，有效地提高了BaCo_0.7Fe_0.2Nb_0.1O_3-δ钙钛矿材料的化学稳定性.

关键词: 透氧膜反应器；钙钛矿；化学稳定性

Abstract:

Coupling with the dense mixed conducting oxygenpermeation membrane, the cost of producing hydrogen using POM method can be reduced. However, since membrane is used in hightemperature applications under strong reductive atmosphere, ability of the oxygenpermeation and chemical stability is especially needed. Calculation on lattice parameters and the corresponding trials through O₂-TPD, CO₂-TG and oxygenpermeation experiments implies that Sr²⁺is substituted on A site by Ba²⁺, and doping Nb⁵⁺ on B site in perovskite lattice can effectively improve chemical stability of the perovskite membrane. 

Key words: oxygen permeation membrane reactor； perovskite； chemical stability

中图分类号:

TQ 031

黄少卿，丁伟中，沈培俊，杨志彬，周宇鼎，张玉文. BaCo_0.7Fe_0.2Nb_0.1O_3-δ钙钛矿型混合导体透氧膜的性能[J]. 上海大学学报(自然科学版), 2010, 16(1): 43-47.

HUANG Shao-qing,DING Wei-zhong,SHEN Pei-jun,YANG Zhi-bin,ZHOU Yu-ding,ZHAN Yu-we. Properties of BaCo_0.7Fe_0.2Nb_0.1O_3-δ PerovskiteType Mixed Conducting Oxygen-Permeation Membrane[J]. Journal of Shanghai University（Natural Science Edition）, 2010, 16(1): 43-47.