Preparation of tungsten oxide
Patent
·
OSTI ID:988694
- Yankton, SD
- Los Alamos, NM
- Jemez Springs, NM
Tungsten trioxide hydrate (WO.sub.3.H.sub.2O) was prepared from a precursor solution of ammonium paratungstate in concentrated aqueous hydrochloric acid. The precursor solution was rapidly added to water, resulting in the crash precipitation of a yellow white powder identified as WO.sub.3.H.sub.2O nanosized platelets by x-ray diffraction and scanning electron microscopy. Annealing of the powder at 200.degree. C. provided cubic phase WO.sub.3 nanopowder, and at 400.degree. C. provided WO.sub.3 nanopowder as a mixture of monoclinic and orthorhombic phases.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Number(s):
- 7,591,984
- Application Number:
- 10/629,489
- OSTI ID:
- 988694
- Country of Publication:
- United States
- Language:
- English
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