Precursor compounds of alkaline earth metal or rare earth metal aluminates method production and use thereof particularly as precursors for luminophores
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United States of America Patent
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Dec 1, 2009
Grant Date -
Dec 7, 2006
app pub date -
May 19, 2004
filing date -
May 23, 2003
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Abstract
The invention relates to alkaline-earth or rare-earth metal aluminate precursor compounds, to their method of preparation and to their use in particular as phosphor precursors. These alkaline-earth or rare-earth metal aluminate precursor compounds are essentially crystallized in the form of a transition alumina and in the form of substantially spherical and chemically homogeneous particles including pores whose mean diameter is of at least 10 nm.
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