Al^(3+)掺杂锂皂石的合成及其性能研究  

Synthesis and Properties of Al^(3+)-doped Hectorite

作　　者：王军[1,2] 姚颖[1] 孙进贺[1] 马军[1] 殷小杰[1,2] 景燕[1] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院研究生院,北京100039

出　　处：《盐湖研究》2012年第1期29-33,共5页Journal of Salt Lake Research

摘　　要：采用水热法合成锂皂石,以LiCl-MgCl2-Na2SiO3-H2O为主要反应体系,加入NaOH调节反应体系的pH值,通过加入Al2(SO4)3.18H2O而引入Al3+进行掺杂改性,合成了系列锂皂石。对所得产物进行XRD检测,探测了产物的结晶化度和结构组成。通过分光光度计和流变仪测定了产物的透光性及粘度性能,结果发现反应体系pH值的变化可引起锂皂石产品水分散体系的透明度;控制一定的Al3+加入量,可得到具有较高粘度的锂皂石产品。The hectorite was synthesized by hydrothermal method with LiCl, MgC12 -6H20 and NaSiO3. The pH value of aqueous system was tuned with NaOH. A series of hetorite dopped A13＋ samples were synthesized with introduction of A12 （SO4）3·18H20-The samples were characterized by X-ray diffraction （XRD）, photometric analysis and viscosity analysis. The results show that hectorite with good transmission and high viscosity could be synthesized under controlled concentration of AI3 ＋ and pH value of aqueous system.

关 键 词：锂皂石 掺杂改性 水热合成 粘度 透光性 

分 类 号：O611.4[理学—无机化学]