Sol-gel-based methodology for the preparation of oxidation/reduction catalysts
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United States of America Patent
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Issued Date -
Feb 15, 2007
app pub date -
Aug 12, 2005
filing date -
Aug 12, 2005
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Abandoned
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Abstract
A process for preparing an oxidation/reduction catalyst system includes providing a sol-gel precursor; providing a metal oxide wash coat mixture; and dispersing the sol-gel precursor in the metal oxide wash coat mixture to provide a dispersion of sol-gel precursor in metal oxide wash coat mixture. This dispersion of sol-gel precursor in metal oxide wash coat mixture is then deposited on a support, which is subsequently thermally-treated in an oxygen-containing environment to drive off volatiles and oxidize metallic components, thereby producing a thermally-treated support. Finally, a noble metal coating is applied to the thermally-treated support.
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