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Citation: LI Xian-Cai, WANG Wen-Juan, YANG Yi-Feng, RAO Guo-Hua. Preparation and Characterization of WO₃ from Ammonium Paratungstate via Hydrothermal Method[J]. Chinese Journal of Applied Chemistry, ;2005, 22(8): 883-886. shu

Preparation and Characterization of WO₃ from Ammonium Paratungstate via Hydrothermal Method

1.
a Department of Chemistry, College of Science, Nanchang University, Nanchang 330047;
2.
b Journal Editorial Office, Nanchang University, Nanchang;
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c Institute of Energy, Jiangxi Academy of Sciences, Nanchang

Corresponding author: LI Xian-Cai,
Received Date: 8 October 2004
Available Online: 8 March 2005
Fund Project: 江西省自然科学基金(0320030) (0320030)江西省教育厅(Z02290)资助项目 (Z02290)

Tungsten trioxide powder has been prepared from ammonium paratungstate via hydrothermal method using orthogonal and mono-level design of experiments.The effect of the preparation process on particle size,specific surface area,crystal form and crystalline morphology of the tungsten trioxide was investigated by TEM and XRD etc.It was found that the optimum conditions of the preparation are hydrothermal crystallization for 8 h at 180℃,followed by vacuum drying at 45℃ and calcination at 500℃ for 2 h.The blank reference experiment shows that hydrothermal crystallization treatment favors the formation of hexagonal tungsten trioxide,and the tungsten trioxide powder sample prepared by this method has a high degree of crystallinity.
- ammonium paratungstate,
- orthogonal design,
- tungsten trioxide,
- hydrothermal
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Preparation and Characterization of WO3 from Ammonium Paratungstate via Hydrothermal Method

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Preparation and Characterization of WO₃ from Ammonium Paratungstate via Hydrothermal Method