水热法合成硅孔雀石的研究  

Study on Hydrothermal Synthesis of Chrysocolla

作　　者：赵娟[1] 刘云清[1] 刘常青[1] 戴宽[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《有色金属（冶炼部分）》2013年第6期48-50,57,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB613601)

摘　　要：以硅酸钠溶液和硝酸铜溶液为原料,采用水热合成法合成硅孔雀石,考察了制备前驱体时反应物滴加顺序、反应温度、水热结晶温度、反应时间和矿化剂等因素对硅孔雀石合成的影响,采用红外、XRD、化学分析等手段对产物进行表征。结果表明,在硅酸钠溶液中滴入硝酸铜溶液,反应温度为35℃,时间4h,加入40mL质量浓度为0.1mol/L的Na2SiO3和20mL质量浓度为0.1mol/L的NaOH混合液为矿化剂,水热反应温度120℃,时间6h的条件下,得到了纯度较高的天蓝色硅孔雀石。Chrysocolla was prepared by hydrothermal synthesis method with sodium silicate solution and copper nitrate solution as reactants.The effects of dropping order of reactants,stirring reaction temperature,temperature and time of hydrothermal reaction,and mineralizer on synthesis were investigated.The products were characterized by IR,XRD and chemical analysis.The results show that high-purity sky-blue chrysocolla is prepared under the following conditions including sodium silicate solution dropped into copper nitrate solution,stirring reaction temperature of 35℃,stirring reaction time of 4h,dosage of mineralizer of 0.1mol/L Na2SiO3of 40mL and 0.1mol/L NaOH of 20mL,hydrothermal reaction temperature of 120℃,and hydrothermal reaction time of 6h.

关 键 词：硅孔雀石 水热合成 因素 表征 

分 类 号：TF803.24[冶金工程—有色金属冶金]