高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 450.

• 研究论文 • 上一篇    下一篇

WPTA-H2O2-KOH体系制备过氧钨酸钾的研究

石晓波, 岳斌, 林秉发, 金松林, 朱思三, 谢高阳   

  1. 复旦大学化学系 上海 200433
  • 收稿日期:1992-07-21 修回日期:1992-10-06 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 谢高阳
  • 基金资助:

    国家自然科学基金

Studies on the Preparation of Potassium Peroxytungstates from WPTA-H2O2-KOH System

SHI Xiao-Bo, YUE Bin, LIN Bing-Fa, JIN Song-Lin, ZHU Si-San, XIE Gao-Yang   

  1. Deportment of Chenustry, Fudan University, Shanghm, 200433
  • Received:1992-07-21 Revised:1992-10-06 Online:1993-04-24 Published:1993-04-24

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摘要： 在WPTA-H2O2-KOH体系中,通过WPTA的解聚制备了W:O22-为1:4、2:4和2:2等3个不同组成的过氧钨酸钾,用IR、UV和XRD对其进行了表征。热分析结果表明存在新的晶态K2W2P7物相。

关键词: 粉状白钨酸, 过氧化氢, 解聚, 过氧钨酸钾

Abstract: Three potassium peroxytungstatesK2W(O2)4(PPT-1), K2W2O3(O2)4·4H2O(PPT-2) and K2W2O5(O2)2·4H2O(PPT-3) were prepared by the disaggregation of white powdery tungstic acid with 4%-15% H2O2 at room temperature and adjusting pHvalues with potassium hydroxide soluti-ion.PPT-3 is a new compound, its structure has been induced.The peroxytungstates were characterized by IRspectra, UVabsorption spectra, X-ray powdery diffraction and thermogram.It is verified that there exists a new phase of K2W2O7.

Key words: White powdery tungstic acid(WPTA), Hydrogen peroxide, Disaggregation, Potassium peroxytungstates

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