摘要
以CuSO4溶液为原料,用葡萄糖作为预还原剂进行初步还原,用抗坏血酸进行二次还原,在不同的工艺参数下制备了超细铜粉;用激光粒度仪、SEM、XRD等对铜粉进行了表征。结果表明:较优的制备工艺为预还原时间90 min,溶液中Cu2+浓度0.2 mol.L-1,还原反应温度为80℃,溶液的pH值为14,葡萄糖浓度为0.05 mol.L-1,抗坏血酸浓度为0.025 mol.L-1;制备的铜粉平均粒径为8μm左右,粒径分布窄;铜粉形貌为各向生长均匀结晶良好的立方体、柱状或类球晶体;低温干燥后生成物为纯铜粉,未见Cu2O和CuO的特征峰。
A two-step reduction method was used to produce fine copper powders with copper sulfate as raw material,glucose as prereductant and vitamine C as reductant.The fine copper powders produced under the conditions of different technical parameters was characterized by laser granularity instrument,SEM,and XRD.The results show that the optimized preparation technique was prereduction time of 90 min,Cu2+ concentration of 0.2 mol·L-1,reduction temperature of 80 ℃,solution pH of 14,the glucose concentration of 0.05 ...
出处
《机械工程材料》
CAS
CSCD
北大核心
2008年第8期36-39,共4页
Materials For Mechanical Engineering
关键词
二步还原
超细铜粉
葡萄糖
抗坏血酸
two-step reduction
ultrafine copper powder
glucose
vitamine C
