撞击流反应-沉淀法制备纳米氧化镍  

Preparation of nano nickel oxide by reaction precipitation in impinging streams reactor

作　　者：周玉新[1,2] 张娟[1,2] 朱华娟[1,2] 李哲伦[1,2] 伍沅[1,2] 

机构地区：[1]武汉工程大学化工与制药学院,湖北武汉430073 [2]绿色化工过程省部共建教育部重点实验室,湖北武汉430073

出　　处：《化学工程师》2010年第4期1-3,共3页Chemical Engineer

基　　金：国家自然科学基金(No29276260;20076043)

摘　　要：在浸没循环撞击流反应器中,以NiCl2、NH4HCO3为原料,采用液-液相反应沉淀法制备了纳米NiO,并对产品进行了X射线衍射(XRD)和电子透射显微镜(TEM)表征。探讨了反应物浓度、反应温度、反应时间及原料配比对收率的影响,初步确定制备纳米NiO较适宜的工艺条件为:NiCl2的摩尔浓度0.20mol·L-1,反应温度是50℃,反应时间为90min,NH4HCO3与NiCl2的摩尔比为2.0,此条件下收率为90.14%。XRD和TEM表征表明产品成分为NiO,平均粒径40nm。Nano-nickel oxide was prepared by liqid-liqid deposition method in submerged circulating impinging stream reactor with nickel chloride and ammonium bicarbonate, and the products were characterized by XRD and TEM. The influences of reactant concentration,reactive temperature and time,ratio of reactants on yield of the product were investigated, and the more appropriate process parameters of preparing nano-nickel, oxide were obtained primarily： the concentration of nickel chloride was 0.20 mol·L^-l, the reaction temperature was 50℃, the reaction time was 90 min,molar ratio of ammonium bicarbonate and nickel chloride was 2.0 and the yield was 90.14% .Characterization about XRD and TEM showed that the product was mainly NiO,and average grain diameter of the product was 40nm.

关 键 词：氧化镍 浸没循环撞击流反应器 纳米材料 沉淀法 

分 类 号：TQ138.1[化学工程—无机化工]