有机胺共沉淀法制备类球型氢氧化钴  

Preparation of Spherical Cobalt Hydroxide by Organic Amine Coprecipitation

作　　者：桑子容 韩培林 罗喆 陈杰 吴云 张勇[1] SANG Zirong;HAN Peilin;LUO Zhe;CHEN Jie;WU Yun;ZHANG Yong(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430205

出　　处：《武汉工程大学学报》2022年第6期643-647,共5页Journal of Wuhan Institute of Technology

基　　金：青海省科技计划项目(2020-GX-103);海西州科技计划项目(2019-101)。

摘　　要：以氯化钴、有机胺为原料,利用有机胺共沉淀法制备了球形氢氧化钴。使用X射线衍射仪、扫描电子显微镜和激光粒度分析仪对其进行了晶体结构、形貌和粒度分析。实验发现,反应的温度、时间、搅拌速度、氯化钴浓度对氢氧化钴的粒度和形貌有重要影响。研究了上述条件对球形氢氧化钴制备的影响并进行了理论分析。结果表明当氯化钴浓度为2 mol/L、反应温度为65℃、搅拌速度为560 r/min时,所得氢氧化钴外观呈球形,平均粒度为5.046μm。本文提出的球形氢氧化钴制备方法极大程度减少了氨氮废水的产生,降低了工业生产成本。Spherical cobalt hydroxide was prepared with cobalt chloride and organic amine by organic amine precipitation method. The crystal structure,morphology and particle size were analyzed by X-ray diffraction analyzer,scanning electron microscopy and laser particle size analyzer. It was found that the reaction temperature,time,stirring speed and cobalt chloride concentration have significant influences on the particle size and morphology of cobalt hydroxide. The effects of the above conditions on the preparation of spherical cobalt hydroxide were theoretically analyzed. The results show that the morphology of obtained product is spherical with the average particle size of 5.046 μm at cobalt chloride solution concentration of 2 mol/L,stirring speed of 560 r/min,reaction time of 2 h and reaction temperature of 65 ℃. The production method of Co(OH)2significantly reduces the production of ammonia-nitrogen wastewater and the cost of industrial production.

关 键 词：有机胺 球形氢氧化钴 共沉淀法 

分 类 号：TQ138.12[化学工程—无机化工]