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AssigneeEngelhard Corporation
InventorsJeffrey B. Hoke, Matthew P. Larkin, Robert J. Farrauto, Kenneth E. Voss, Robert E. Whiteley, Leonard M. Quick
Estimating the term…
A method for treating cooking fumes to oxidize oxidizeable particulate and gaseous components thereof includes contacting the fumes with a catalytic material containing ceria and alumina each having a BET surface of at least about 10 m.sup.2 /g, for example, ceria and activated alumina in a weight ratio of from about 1.5:1 and 1:1.5 and a BET surface area of from about 25 m.sup.2 /g to 200 m.sup.2 /g. Optionally, a catalytic metal component such as platinum or palladium may be included in the catalytic material. The foodstuffs cooking fumes are contacted with the catalyst composition (22 or 40) at a temperature of 200.degree. C. to 600.degree. C. to promote the oxidation of both particulate (atomized) animal and/or vegetable oils and fats and oxidizeable gas phase components of the fumes. Optionally, a separate, supplemental gas phase oxidation catalyst (42) may be used in conjunction with and downstream of the above-described catalyst (40) to provide a two-catalyst system for treating cooking fumes.
A method for treating fumes produced by cooking foodstuffs by oxidizing at least oxidizeable particulate components of the fumes comprises contacting the fumes with a catalyst composition at a temperature high enough to oxidize at least some oxidizeable particulate components of the fumes, the catalyst composition comprising a refractory carrier on which is disposed a coating of a ceria-alumina catalytic material comprising a combination of bulk ceria having a BET surface of at least about 10 m.sup.2 /g and bulk alumina having a BET surface of at least about 10 m.sup.2 /g, and from 0 to about 0.5 g/ft.sup.3 of a catalytic metal component dispersed thereon.
A method for treating fumes produced by cooking foodstuffs by oxidizing at least oxidizeable particulate components of the fumes comprises contacting the fumes with a catalyst composition at a temperature high enough to oxidize at least some oxidizeable particulate components of the fumes, the catalyst composition comprising a refractory carrier on which is disposed a coating of ceria-alumina catalytic material comprising a combination of bulk ceria having a BET surface of at least about 10 m.sup.2 /g and bulk alumina having a BET surface of at least about 10 m.sup.2 /g, and from about 5 g/ft.sup.3 to about 80 g/ft.sup.3 of a platinum catalytic metal component dispersed thereon.
A method for treating fumes produced by cooking foodstuffs by oxidizing at least oxidizeable particulate components of the fumes comprises contacting the fumes with a catalyst composition at a temperature high enough to oxidize at least some oxidizeable particulate components of the fumes, the catalyst composition comprising a refractory carrier on which is disposed a coating of ceria-alumina catalytic material comprising a combination of bulk ceria having a BET surface of at least about 10 m.sup.2 /g and bulk alumina having a BET surface of at least about 10 m.sup.2 /g, and from about 0.1 to 200 g/ft.sup.3 of a palladium catalytic metal component dispersed thereon.
Dependencies are inferred from the claim text.