撞击流反应器中以甲醛为还原剂制备纳米铜粉的研究  

Study on Preparation of Nanometer Copper Powder with Formaldehyde as Reducing Agent in Impinging Stream Reactor

作　　者：周玉新[1] 刘朝霞[1] 郭嘉[1] 

机构地区：[1]武汉工程大学化工与制药学院绿色化工过程省部共建教育部重点实验室,湖北武汉430074

出　　处：《河南化工》2013年第13期27-30,共4页Henan Chemical Industry

基　　金：国家自然科学基金资助项目(21076165)

摘　　要：在浸没循环撞击流反应器(SCISR)中,采用五水硫酸铜为原料,以甲醛为还原剂制备纳米铜粉。初步确定了制备纳米铜粉的最优工艺条件:Cu2+的浓度0.2 mol/L,甲醛与铜物质的量比为2∶2,氢氧化钠与铜物质的量比为4∶2,反应温度为70℃,反应时间为20 min,2%PVP用量为60 mL,产品收率可达99%以上。并采用TEM和XRD对产品进行表征。所得产品呈针形,直径约10 nm,长30～70 nm,纯度很高。Using bluestone as material, formaldehyde as reducing agent, the nanometer copper powder are prepared in submerged circulation impinging stream reactor （SCISR）. The optimum condition are deter mined preliminarily ： the concentration of Cu^2＋ is 0. 2 mol / L , molor ratio of formal dehyde and copper is 2 ： 2, molor ratio of sodium hydroxide and copper is 4 ： 2, reactor temperature 70 ~C, reactor time 20 min, the amount of 2% PVP is60 mL,the yield of the product can reach more than 99%. The product are characterized by XRD and TEM. The product is a needle shaped,about 10 nm in diameter,30 -70 nm in length, it purity is high.

关 键 词：撞击流 甲醛 纳米铜粉 

分 类 号：TQ131.2[化学工程—无机化工]