摘要
介绍了在硫氰酸根介质中制备粉状白钨酸的方法。所得产品颗粒大，活性好，钨的得率达９８％以上。用热重、红外、电镜以及Ｘ粉末衍射等分析，测得某些化学性质，讨论了钨酸的形成条件对结构、颗粒状、颜色和化学活性的影响。
Na2WO4 Solution was obtained in the stirring solution of 1 mol/L HNO3-2 mol/L KCNS,the PH value of which was around 1. The product was anactive white species and its yield was 98%.The properties of these hydrateswere determinted by thermogravimeter analysis, Infrared spectroscopy,protonnuclear magnetic resonance,electron micro scopy and X-ray powder diffraction.Effects of the forming conditions on constrttction,colour,particle distributionand chemical activity were also studied.
关键词
硫氰酸根
制备
性质
钨酸
Thiocyanate radical
Tungstic oxide hydrates
Preparation andproperty
