发明名称 |
Preparation of tungsten oxide |
摘要 |
Tungsten trioxide hydrate (WO3.H20) 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 WO3.H20 nanosized platelets by x-ray diffraction and scanning electron microscopy. Annealing of the powder at 200° C. provided cubic phase WO3 nanopowder, and at 400° C. provided WO3 nanopowder as a mixture of monoclinic and orthorhombic phases.
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申请公布号 |
US2005025700(A1) |
申请公布日期 |
2005.02.03 |
申请号 |
US20030629489 |
申请日期 |
2003.07.28 |
申请人 |
BULIAN CHRISTOPHER J.;DYE ROBERT C.;SON STEVEN F.;JORGENSEN BETTY S.;PERRY W. LEE |
发明人 |
BULIAN CHRISTOPHER J.;DYE ROBERT C.;SON STEVEN F.;JORGENSEN BETTY S.;PERRY W. LEE |
分类号 |
C01G41/00;C01G41/02;(IPC1-7):C01G41/02 |
主分类号 |
C01G41/00 |
代理机构 |
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代理人 |
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地址 |
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