室温固相反应合成钼磷酸铵、钨磷酸铵纳米微粒  

Synthesis of (NH_4)_3PMo_(12)O_(40) ·7H_2O and (NH_4)_3PW_(12)O_(40) ·9H_2O Nanoparticles by Solid-State Reaction at Room Temperature

作　　者：石晓波[1] 万屏南[1] 李春根[1] 汪德先[1] 

机构地区：[1]江西师范大学化学学院,江西南昌330027

出　　处：《合成化学》2003年第4期334-337,共4页Chinese Journal of Synthetic Chemistry

基　　金：国家自然科学基金资助项目 (No.2 0 2 610 0 3 )

摘　　要：采用室温固相反应法合成了钼磷酸铵、钨磷酸铵两种多金属氧酸盐纳米微粒 ,用元素分析确定了其分子组成。它们的结构、性质、颗粒大小、表面形状分别用 IR,X-射线粉末衍射、透射电镜和热分析等手段进行了研究。结果表明 :两种多金属氧酸盐都为 Keggin结构 ,晶粒分别为 3 4nm和 3 2 nm左右 。The polyoxometate particles, (NH 4) 3PMo 12 O 40 ·7H 2O and (NH 4) 3PW 12 O 40 ·9H 2O were synthesized by solid state reaction at room temperature. Their structure, particle size, thermal properties and surface nature were characterized by elemental analyses, IR, XRD, TEM and TG DTA techniques. The results show that these two polyoxometate particles have the same Keggin structure and the size is about 34nm and 32nm respectively. The stability of the hetoropoly anion decreased when nanoparticles were formed.

关 键 词：室温固相反应合成 钼磷酸铵 钨磷酸铵 纳米微粒 多金属氧酸盐 KEGGIN结构 催化剂 

分 类 号：O643.36[理学—物理化学]