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Citation: Gu Yidong(Yih-Tong Ku), Zhu Sisan, Shao Cuiqi, Song Yuan, Jing Songlin. CORRELATION OF ACTIVE WHITE POWDERY TUNGSTIC ACID WITH DECA-AND HEXA-TUNGSTATES TOGETHER WITH THEIR RECENT DEVELOPMENTS[J]. Chinese Journal of Applied Chemistry, ;1989, 6(6): 1-7. shu

CORRELATION OF ACTIVE WHITE POWDERY TUNGSTIC ACID WITH DECA-AND HEXA-TUNGSTATES TOGETHER WITH THEIR RECENT DEVELOPMENTS

1.
Department of Chemistry, Fudan University, Shanghai

Received Date: 22 July 1988
Available Online: 30 April 1989

Through ion exchange reaction together with the use of electron pair donor organic reagents, active white powdery tungstic oxide hydrate (abbr. WPTA) can be separated into mutually convertible deca- and hexa-tungstates. A brief sketch of procedures is given inscheme 1. The success of the above mentioned method in getting deca- and hexa-tungstates promptly led to our new method of preparing deca- and hexa-tungstates through oxidation of tungsten carbide with hydrogen peroxide. Many applications of WPTA, together with different polytungstates prepared therefrom,as an extension of those listed in our previous report^[3], with significant new addtions including photo-chromic polytungstates, have been hereby presented. The acidification scheme connecting sodium tungstate to yellw tungstic acid has been proposed through the incorporation of deca- and hexa-tungstates. A Brief sketch is given is scheme 2.
- Active tungstic acid,
- Deca-tungstate,
- Hexa-tungstate,
- Photo-chromic polytungstate,
- Review
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