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Synthesis of the negative thermal expansion compound ZrW2O8 by the spray drying technique

(2002) KEY ENGINEERING MATERIALS. 206(2). p.11-14
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Abstract
A novel method for the synthesis of zirconium tungstate, based on the technique of spray drying, is reported. As starting products ammonium metatungstate, zirconium oxychloride and zirconium oxynitrate were selected because of their high solubility in water. However, when mixing together these compounds in the desired stoichiometric amounts, a white slurry was obtained. Spray drying of the slurry resulted in powder with enhanced reactivity due to the thorough intermixing of the Zr- and W-phases. After a preheating step at 700 degreesC for 10 hours, calcination of the powder at 1180 degreesC during 1 hour performed in sealed quartz tubes already formed ZrW2O8 Of high quality. Compared to zirconium tungstate prepared by a more conventional solid state reaction between ZrO2 and WO3, the product synthesised with the spray drying technique has a very high density and higher purity.

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Chicago
De Meyer, Christy, Isabel Van Driessche, and Serge Hoste. 2002. “Synthesis of the Negative Thermal Expansion Compound ZrW2O8 by the Spray Drying Technique.” Key Engineering Materials 206 (2): 11–14.
APA
De Meyer, C., Van Driessche, I., & Hoste, S. (2002). Synthesis of the negative thermal expansion compound ZrW2O8 by the spray drying technique. KEY ENGINEERING MATERIALS, 206(2), 11–14.
Vancouver
1.
De Meyer C, Van Driessche I, Hoste S. Synthesis of the negative thermal expansion compound ZrW2O8 by the spray drying technique. KEY ENGINEERING MATERIALS. 2002;206(2):11–4.
MLA
De Meyer, Christy, Isabel Van Driessche, and Serge Hoste. “Synthesis of the Negative Thermal Expansion Compound ZrW2O8 by the Spray Drying Technique.” KEY ENGINEERING MATERIALS 206.2 (2002): 11–14. Print.
@article{162308,
  abstract     = {A novel method for the synthesis of zirconium tungstate, based on the technique of spray drying, is reported. As starting products ammonium metatungstate, zirconium oxychloride and zirconium oxynitrate were selected because of their high solubility in water. However, when mixing together these compounds in the desired stoichiometric amounts, a white slurry was obtained. Spray drying of the slurry resulted in powder with enhanced reactivity due to the thorough intermixing of the Zr- and W-phases. After a preheating step at 700 degreesC for 10 hours, calcination of the powder at 1180 degreesC during 1 hour performed in sealed quartz tubes already formed ZrW2O8 Of high quality. Compared to zirconium tungstate prepared by a more conventional solid state reaction between ZrO2 and WO3, the product synthesised with the spray drying technique has a very high density and higher purity.},
  author       = {De Meyer, Christy and Van Driessche, Isabel and Hoste, Serge},
  issn         = {1013-9826},
  journal      = {KEY ENGINEERING MATERIALS},
  language     = {eng},
  number       = {2},
  pages        = {11--14},
  title        = {Synthesis of the negative thermal expansion compound ZrW2O8 by the spray drying technique},
  volume       = {206},
  year         = {2002},
}

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