不同制备条件对合成绿铜锌矿的影响研究

Study on influence of different preparation conditions on synthesis of aurichalcite

采用共沉淀法制备绿铜锌矿晶体,考察了沉淀剂质量浓度､真空度､铜锌摩尔比和铜离子浓度对绿铜锌矿晶体合成的影响。利用化学吸附､BET､扫描电镜和XRD对晶体进行表征。结果表明,沉淀剂质量浓度､真空度和铜离子浓度对合成绿铜锌矿晶体的物相影响较小,铜锌摩尔比对物相的组成影响较大,制备得到的晶体主要为棒状或块状的孔雀石和针状的绿铜锌矿,所制备的晶体为介孔材料。

Aurichalcite crystal is prepared via co-precipitation method.The effects of precipitant mass concentration,vacuum degree,the molar ratio of copper to zinc,and copper ion concentration on the synthesis of aurichalcite crystal are investigated.The crystal is characterized by means of chemical adsorption,BET,scanning electron microscopy and XRD.It is indicated that the mass concentration of precipitant,vacuum degree and copper ion concentration have little influence on the phase of aurichalcite crystal.The molar ratio of copper to zinc has a great influence on the composition of the phase of the crystal.The prepared crystal is mainly rod-like or block-like malachite and needle-like aurichalcite,and belongs to mesoporous material.