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AssigneeDow Global Technologies LLC
InventorsDeborah H. Parker, Robert G. Bowman, Howard W. Clark, George E. Hartwell, Alex Kuperman
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A process of activating a fresh catalyst or regenerating a deactivated catalyst which is used in a hydro-oxidation process, preferably, the hydro-oxidation of an olefin in the presence of oxygen and hydrogen to an olefin oxide. The hydro-oxidation catalyst preferably comprises at least one metal selected from gold, silver, the platinum group metals, the lanthanide metals, and combinations thereof, incorporated onto a titanium- , vanadium- , or zirconium-containing support, more preferably, a titanium-containing support, such as titanium oxide or a titanosilicate. The activation or regeneration process involves contacting the fresh catalyst or the deactivated catalyst with ozone.
A process of activating or regenerating a hydro-oxidation catalyst comprising contacting a fresh hydro-oxidation catalyst or a deactivated hydro-oxidation catalyst with an ozone stream, the hydro-oxidation catalyst comprising one or more catalytic metals deposited on a catalyst support, the contacting being conducted under process conditions sufficient to activate the fresh hydro-oxidation catalyst or regenerate, at least in part, the deactivated hydro-oxidation catalyst in a hydro-oxidation process wherein a hydrocarbon is oxidized with oxygen in the presence of hydrogen to form a partially-oxidized hydrocarbon.
A process of activating or regenerating a hydro-oxidation catalyst comprising contacting a fresh hydro-oxidation catalyst or a deactivated hydro-oxidation catalyst with a stream comprising ozone and, optionally, oxygen, the hydro-oxidation catalyst comprising gold and at least one promoter metal selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, barium, erbium, and lutetium deposited on titanosilicate, the contacting being conducted under process conditions sufficient to activate the fresh hydro-oxidation catalyst or regenerate, at least in part, the deactivated hydro-oxidation catalyst in a hydro-oxidation process wherein propylene is oxidized with oxygen in the presence of hydrogen to form propylene oxide.
Dependencies are inferred from the claim text.