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AssigneeDow Global Technologies LLC
InventorsDavid G. Barton, Robert G Bowman, George E Hartwell, Howard W Clark, Alexander Kuperman
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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.
A method of increasing the lifetime of a hydro-oxidation catalyst comprising at least one catalytic metal on a catalyst support, the method comprising contacting the hydro-oxidation catalyst support with a hydroxy-functionalized organosilicon compound, a carboxy-functionalized organosilicon compound, or a mixture of hydroxy-functionalized and carboxy-functionalized organosilicon compounds, under conditions sufficient to increase the catalyst lifetime.
A composition comprising a catalytic metal selected from gold, silver, the platinum group metals, the lanthanide metals, and mixtures thereof, and optionally one or more promoter(s) on a titanium-containing support, the support being contacted with a hydroxy-functionalized organosilicon compound, a carboxy-functionalized organosilicon compound, or a mixture of hydroxy-functionalized and carboxy-functionalized organosilicon compounds.
A process of preparing a partially-oxidized hydrocarbon comprising contacting a hydrocarbon with oxygen in the presence of hydrogen and a hydro-oxidation catalyst comprising at least one catalytic metal on a catalyst support, the contacting being conducted under reaction conditions sufficient to prepare a partially-oxidized hydrocarbon, the catalyst being further characterized in that prior to use the catalyst support is contacted with a hydroxy-functionalized organosilicon compound, a carboxy-functionalized organosilicon compound, or a mixture of hydroxy-functionalized and carboxy-functionalized organosilicon compounds.
Dependencies are inferred from the claim text.