钼钨磷混配杂多酸铵纳米微粒的固相合成与表征  

Solid State Synthesis and Characteristies of (NH_4)_3PW_6Mo_6O_(40)·8H_2O Nanoparticle

作　　者：石晓波[1] 王国平[2] 李春根[1] 汪德先[1] 

机构地区：[1]江西师范大学化学学院 [2]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《江西师范大学学报（自然科学版）》2004年第1期68-71,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20261003).

摘　　要：采用室温固相反应法合成了钼钨磷混配杂多酸铵(NH4)3PW6Mo6O40·8H2O产物,用元素分析确定了分子组成,其结构、性质、颗粒大小、表面形状分别用红外光谱、X-射线粉末衍射、透射电镜、热分析和比表面积测试等手段进行了研究.结果表明:产物为Keggin结构的纳米粒子,平均粒径为12nm,比表面积为134.2m2·g-1,形成纳米微粒后,杂多阴离子的热稳定性有所下降.The polyoxometate particle (NH_4)_3PW_6Mo_6O_(40)·8H_2O were synthesized by solid-state reaction at room temperature. Their structure, particle size, thermal properties and surface nature were characterized with elemental analyses, IR, XRD, TEM, TG-DTA and BET techniques. The results show that the polyoxometate particle (NH_4)_3PW_6Mo_6O_(40) are found to exhibit Keggin structure, have a surface area of 134.2 m^2·g^(-1), the mean grain size is 12 nm,the stability of the hetoropoly anion decreased when nanoparticles were formed.

关 键 词：钼钨磷混配杂多酸铵 纳米微粒 室温固相合成 杂多阴离子 Keggin结构 催化剂 

分 类 号：TQ426.91[化学工程]