纤维状复杂钴盐的制备  

Preparation of Fibrous Cobalt Complex

作　　者：董成勇[1] 张传福[1] 湛菁[1] 邬建辉[1] 

机构地区：[1]中南大学冶金学院,湖南长沙410083

出　　处：《矿冶工程》2006年第4期54-57,共4页Mining and Metallurgical Engineering

摘　　要：以氨水、草酸和氯化钴为原料,通过配位沉淀制备得到了纤维钴粉前驱体———纤维状复杂钴盐粉末。通过XRD分析、化学成分分析和电位-pH图可以得知该复杂钴盐分子式为[Co(NH3)x]C2O4.yH2O(x=1.2…6)。初始Co2+浓度、反应时间和温度等因素都能够影响纤维状复杂钴盐的形成。通过电镜图片分析了这些因素对前驱体形貌的影响行为。Fibrous cobalt complex, a precursor of fibrous cobalt powders, can be prepared by coordination precipitation, using ammonia, oxalate and cobalt chloride as the raw materials. Analyzing XRD patterns, element composition and E - pH diagram, it can be concluded that the complex should be [ Co（ NH3 ）x ] C2O4 · yH2O （x = 1,2,... ,6）. Factors such as the initial Co^2＋ concentration, reaction time and temperature, can affect the formation of the fibrous cobalt complex powders, and the influence of these factors on the precursor morphology was characterized using SEM.

关 键 词：复杂钴盐 配位沉淀 纤维状 

分 类 号：TF111[冶金工程—冶金物理化学]