Protonic conduction in Ca2+-doped La2M2O7 (M = Ce, Zr) with its application to ammonia synthesis electrochemically

被引：90

作者：

Wang, JD ^{[1
]}

Xie, YH ^{[1
]}

Zhang, ZF ^{[1
]}

Liu, RQ ^{[1
]}

Li, ZH ^{[1
]}

机构：

[1] XinJiang Univ, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2005年 / 40卷 / 08期

关键词：

pyrochlore; fluorite; sol-gel; synthesis of ammonia; proton conductor;

D O I：

10.1016/j.materresbull.2005.04.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Complex oxides La1.95Ca0.05M2O7-delta (M = Ce, Zr) were prepared by sol-gel method and characterized by thermal analysis (TG-DTA), X-ray diffraction (XRD). On the sintered complex oxides as solid electrolyte, the conductivity was measured in various atmospheres, and ammonia was synthesized from nitrogen and hydrogen at atmospheric pressure in the solid states proton conducting cell reactor by electrochemical methods. The rates of ammonia formation were up to 2.0 x 10(-9) mol s(-1) cm(-2) for La1.95Ca0.05Zr2O7-delta and 1.3 x 10(-9) mol s(-1) cm(-2) for La1.95Ca0.05Ce2O7-delta, respectively, at 520 degrees C. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1294 / 1302

页数：9

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