Catalyst regeneration process
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United States of America Patent
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Aug 14, 2007
Grant Date -
Aug 25, 2005
app pub date -
Feb 24, 2004
filing date -
Feb 24, 2004
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Abstract
Used noble metal-containing titanium zeolite catalysts, that have been employed in the liquid-phase epoxidation of olefins with hydrogen and oxygen in the presence of a buffer, are regenerated by heating the used catalyst at a temperature of at least 250.degree. C. in the presence of a oxygen-containing gas stream, followed by reduction at a temperature of at least 20.degree. C. in the presence of a hydrogen-containing gas stream to form a reactivated catalyst.
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