摘要
采用共沉淀法制备了MgAl-HTLes，利用X射线衍射、红外光谱、扫描电镜（SEM）对合成物进行了表征。讨论了pH值、原料配比、晶化方式对合成镁铝水滑石结构的影响。结果表明在体系[OH^-]／[Mg^2＋]／[Al^3＋]=16：6：1,pH值8．5—9．5。[CO3^2-]值2～4条件下采用共沉淀法且用水热晶化方式可得到晶相单一的、高纯度的MgAl-HTLes.
Mg-Al hydrotaleites（ MgAl- HTLes）were synthesized by the coprecipitation method, and characterized by XRD, IR and SEM. The effects of pH value, raw material molar ratio and crystallization treatment on the structure of MgAl - HTLes were studied. The results show that unique pure MgAl- HTLes can be prepared at[ OH^- ]/[ Mg^2＋ ]/[ Al^3＋ ] = 16：6：1 with a pH value of 8.5 - 9.5 and[ CO3^2- ] value of 2 - 4 under hydrothermal crystallization treatment.
出处
《铜业工程》
CAS
2006年第4期72-75,104,共5页
Copper Engineering
关键词
镁铝水滑石
共沉淀法
水热晶化
MgAl- HTLes
Co - precipitation
Co - precipitation
Hydrothermal crystallization
