Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent
Reexamination Certificate
2006-10-17
2006-10-17
Nazario-Gonzalez, Porfirio (Department: 1621)
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
C502S120000, C502S326000, C502S344000, C549S533000, C549S534000, C549S536000, C549S537000
Reexamination Certificate
active
07122491
ABSTRACT:
A method of increasing the lifetime of a hydro-oxidation catalyst comprising, preferably, gold, silver, or mixtures thereof, and optionally one or more promoters, on a titanium-containing support, such as a titanosilicate or titanium dispersed on silica. The method of the invention involves contacting the catalyst support with a hydroxy-functionalized organosilicon compound, a carboxy-functionalized organosilicon compound, or a mixture of hydroxy- and carboxy-functionalized organosilicon compounds, such as, sodium methyl siliconate or (2-carboxypropyl)tetramethyldisiloxane. The contacting is preferably conducted during deposition of the catalytic metal(s) and optional promoters(s) onto the support. A catalyst composition and hydro-oxidation process utilizing the silicon-treated catalyst support are also claimed.
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Barton David G.
Bowman Robert G.
Clark Howard W.
Hartwell George E.
Kuperman Alexander
Dow Global Technologies Inc.
Nazario-Gonzalez Porfirio
Zuckerman Marie F.
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