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Preparation of High Pure Tungsten Trioxide by Method of Activated Carbon Absorption and Ethandiol Purification AITranslate

ZHANG Yong-an; ZHANG Wen-pu; TAN Gui-ning; ZHAO Hui-chun
Department of Chemistry, Beijing Normal University;Department of Chemistry, Beijing Normal University;Department of Chemistry, Beijing Normal University;Department of Chemistry, Beijing Normal University
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

Ammonium tungstate is made from scheelite by acid dissolution. Then ammonium tungstate is obsorbed by activated carbon at pH 1 .8 and absolved at strong base. Tungstic acid is precipitated at pH1.Tungstic acid is then dissolved in hot ethandiol and it is reprecipitated under HC1 condition. The purified precipitate burns at elevated temperature and high pure tungsten trioxide can be obtained. Tungsten trioxide is 99. 9% (by scanning electron microscopy, ICP, photometric analysis).This method has the advantages of simple operation, easy post treatment and improved efficiency over the ion exchange or solvent extraction method.

KeyWords AITranslate

absorption activated carbon ethandiol tungstic acid tungsten trioxide.

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Basic Information:

DOI：

Chinese Library Classification Number:TQ136.13[化学工程—无机化工]

Citation Information:

Ammonium tungstate is made from scheelite by acid dissolution. Then ammonium tungstate is obsorbed by activated carbon at pH 1 .8 and absolved at strong base. Tungstic acid is precipitated at pH1.Tungstic acid is then dissolved in hot ethandiol and it is reprecipitated under HC1 condition. The purified precipitate burns at elevated temperature and high pure tungsten trioxide can be obtained. Tungsten trioxide is 99. 9% (by scanning electron microscopy, ICP, photometric analysis).This method has the advantages of simple operation, easy post treatment and improved efficiency over the ion exchange or solvent extraction method.

quote

GB/T 7714-2015 [1] ZHANG Yong-an, ZHANG Wen-pu, TAN Gui-ning, et al. Preparation of High Pure Tungsten Trioxide by Method of Activated Carbon Absorption and Ethandiol Purification[J]. Rare Metals and Cemented Carbides, 1994(3): 6-10.
MLA [1] ZHANG Yong-an, et al., "Preparation of High Pure Tungsten Trioxide by Method of Activated Carbon Absorption and Ethandiol Purification." Rare Metals and Cemented Carbides, no. 3, 1994, pp. 6-10.
APA [1] ZHANG Yong-an, ZHANG Wen-pu, TAN Gui-ning, & ZHAO Hui-chun. (1994). Preparation of High Pure Tungsten Trioxide by Method of Activated Carbon Absorption and Ethandiol Purification. Rare Metals and Cemented Carbides(3), 6-10.
IEEE [1] ZHANG Yong-an, ZHANG Wen-pu, TAN Gui-ning, and ZHAO Hui-chun, "Preparation of High Pure Tungsten Trioxide by Method of Activated Carbon Absorption and Ethandiol Purification," Rare Metals and Cemented Carbides, no. 3, pp. 6-10, 1994. keywords: {absorption, activated carbon, ethandiol, tungstic acid,tungsten trioxide.}