铁酸镧超细粉末的制备  

Preparation of Ultrafine Rare Earths Ferrite Particles

作　　者：刘世昌[1] 徐爱菊[1] 徐效清[1] 张强[1] 王丽荣[2] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古呼和浩特010022 [2]内蒙古农业大学基础部,内蒙古呼和浩特010018

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2005年第2期179-182,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：内蒙古自然科学基金资助项目(20020802120)

摘　　要：以La(NO3)3·6H2O、(NH4)2Fe(SO4)2和Fe2O3为原料,运用正交实验法确定最优实验条件,利用固-液界面法制备稀土铁酸盐超细粉末———铁酸镧.对产物进行部分物理测试,分别测定其全铁、亚铁离子含量,用扫描电子显微镜测定其形貌和粒径.结果表明,产物为均匀的圆球状纳米微粒,平均粒径76.0nm,反应中没有经过中间化合物,而是在固液界面上进行的.Using La(NO_3)_3·6H_2O,(NH_4)_2Fe(SO_4)_2 and Fe_2O_3 as the raw materials,ultrafine rare-earth ferrite particles were prepared by the method of solid-solution interface reaction under optimal condition established by perpendicular way.Some physical properties about size and shape were determined under scanning electron microscope.The results showed that the product is spherical ultrfine particles with the mean grain size of 76nm and the dispersity is good.During reaction there is no mid-compound and the reaction is finished on the solidsolution interface.

关 键 词：超细粉末 铁酸镧 制备 La(NO3)3 扫描电子显微镜 FE2O3 正交实验法 铁离子含量 中间化合物 实验条件 物理测试 纳米微粒 平均粒径 固液界面 铁酸盐 界面法 产物 测定 球状 反应 

分 类 号：TQ172.16[化学工程—水泥工业] TF123.72[化学工程—硅酸盐工业]