文献类型：期刊文献

中文题名：溶胶-凝胶法合成LaCr_(1-x)Fe_xO_3超细粉末

英文题名：Preparation of Ultrafine LaCr 1- x Fe x O 3 Powders by Sol Gel Method

作者：王秉济[1];李梅君[1]

机构：[1]华东理工大学化学系

年份：1997

卷号：15

期号：1

起止页码：74

中文期刊名：中国稀土学报

外文期刊名：Journal of the Chinese Society of Rare Earths

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：溶胶-凝胶法;超细粉末;钙钛矿型氧化物;镧

外文关键词：Rare earth, Lanthanum, Sol gel method, Ultrafine LaCr 1- x Fe x O 3 powder

摘要：以无机盐为原料，用溶胶凝胶法合成了ＬａＣｒ１－ｘＦｅｘＯ３（ｘ＝０～１０）超细粉末，其平均粒径＜１３０ｎｍ。研究表明，随着焙烧温度的升高或时间的增加，粉末的粒径随之增大，比表面积则随之减小；ＬａＣｒ１－ｘＦｅｘＯ３粉末为钙钛矿型结构。
The ultrafine LaCr 1- x Fe x O 3( x =0～1 0) powders was prepared by sol gel method from inorganic salts. The average particle size is <130 nm. The research results show that particle size of powders apparently increase and the surface areas reduced with the increase of calcining temperature and the time. The LaCr 1- x Fe x O 3 powders belongs to the perovskite structure. Its lattice paramelers is increased with the Fe content.