高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (4): 429.

• 研究简报 • 上一篇    下一篇

热分析法测定非计量化合物NaxWO3的组成

王本根, 盘毅   

  1. 国防科技大学
  • 收稿日期:1987-08-31 出版日期:1989-04-24 发布日期:1989-04-24
  • 通讯作者: 王本根

Thermogravimetric Determination for the Components of Nonstoichiometric Compounds NaxWO3

Wang Bengen, Pan Yi   

  1. National University of Defence Technology, Changsha
  • Received:1987-08-31 Online:1989-04-24 Published:1989-04-24

PDF (PC)

摘要： NaxWO3是1种非计量化合物(0<x<1),Na的含量可用化学方法、原子吸收光谱法或离子选择电极法和X射线分析法(0.35<x<1)测定,但上述各法都存在一定问题。一般认为,NaxWO3中的W处于W(Ⅴ)和W(Ⅵ)2种不同的价态。

关键词: 钠, 钨, 青铜, 热重分析法

Abstract: The value of x in sodium tungsten bronzes NaxWO3, a nonstoichio-metric compound, is variable falling in the range 0<x<1. It can be determined by atomic-absorption spectrometry or ion-selective electrodes.The methods have certain disadvantages because the NaxWO3is chemically inert. The present report relates to a new method for researching components of NaxWO, by thermogravimetry.

Key words: Sodium, Tungsten, Bronzes, Thermogravimetric analysis

TrendMD: