文献类型：期刊文献

中文题名：用沉淀法制备超细草酸钴粉体

英文题名：PREPARATION OF ULTRAFINE COBALT OXALATE POWDER BY THE PRECIPITATION METHOD

作者：徐明晗[1];丁时锋[1];宋鹂[2];张金朝[2]

机构：[1]九江学院材料科学与工程学院,江西九江332005;[2]华东理工大学材料科学与工程学院,上海200237

年份：2008

卷号：36

期号：3

起止页码：367

中文期刊名：硅酸盐学报

外文期刊名：Journal of The Chinese Ceramic Society

收录：CSTPCD;;EI(收录号：20081511196532);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：超细草酸钴;直接沉淀法;粉体粒度

外文关键词：ultrafine cobalt oxalate;direct precipitation method;powder size

摘要：以硫酸钴(CoSO4)和草酸(H2C2O4)为原料,采用直接沉淀法制备超细草酸钴(CoC2O4·2H2O)粉体。用X射线衍射分析、热重-差热分析、激光粒度分析和高倍显微镜对制备的CoC2O4·2H2O粉体进行了表征。讨论了H2C2O4浓度、反应温度、表面活性剂、乙醇脱水和加料速率对CoC2O4·2H2O粉体粒度的影响。结果表明:较高的H2C2O4浓度、较低的反应温度、加入表面活性剂、乙醇脱水、较低的加料速率,都有利于制备较细的CoC2O4·2H2O粉体。
Ultrafine cobalt oxalate （CoC2O4·2H2O） powder was prepared by the direct precipitation method using cobalt sulfate （CoSO4）, oxalic acid （H2C2O4）. The powder was characterized by X-ray diffraction, thermogravimetric-differential thermal analysis, granularity analysis, and high multiple microscope. The effects of the H2C2O4 concentration, reaction temperature, surfactant, alcohol dehydration, and feed speed on the size of cobalt oxalate were discussed. The results showed that upper the H2C2O4 concentration, lower temperature, surfactant, alcohol dehydration, and lower feed speed are all useful to prepare ultrafine powder.