期刊
CERAMICS INTERNATIONAL
卷 42, 期 8, 页码 10482-10486出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.03.063
关键词
La2Ce2O7; Molten salt; Dissolution-precipitation
资金
- State Basic Research Development Program of China (973 Program) [2014CB660802]
- National Natural Science Foundation of China (General Program) [51272188, 51472184, 51472185]
- Natural Science Foundation of Hubei Province, China [2013CFA086]
- Foreign Cooperation Projects in Science and Technology of Hubei Province, China [2013BH002]
Lanthanum cerate (La2Ce2O7) powders were synthesized via a simple molten salt route using cerium oxide (CeO2) and lanthanum oxide (La2O3) as raw materials, and KCl-LiCl, Na2CO3-K2CO3 and NaCl-KCl-NaF to form the reaction media. The effects of different processing parameters such as reaction temperature, salt type and salt/reactant ratio on the La2Ce2O7 formation were investigated. Among the three combined salts, NaCl-KCl-NaF showed the best accelerating effect on the La2Ce2O7 formation. Phase pure La2Ce2O7 particles with sizes of 2-5 mu m were obtained after 3 h firing at 1100 degrees C in NaCl-KCl-NaF using the salt/reactant ratio of 3.0:1.0. Use of an appropriately higher amount of molten salt was beneficial to the formation of finer La2Ce2O7 particles. The dissolution-precipitation mechanism is believed to have played a key role in the synthesis process. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据