Layered catalyst composition
February 25, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2742437 3269801 3826736 Apparatus and method for ozone reduction in electrostatographic reproduction equipment Catalyst compositions and the method of manufacturing them Catalyst composition for decomposing ozone Filter material for removal of ozone from the atmosphere Catalyst for ozone decomposition Ozone control catalyst compositions Ozone abatement catalyst having improved durability and low temperature performance InventorsAssigneeApplicationNo. 202397 filed on 02/25/1994US Classes:502/333, Of palladium502/241, Of Group VII (i.e., Mn, Tc or Re)502/262, Platinum or palladium502/324, Of manganese502/339Of palladium or platinumExaminersPrimary: McFarlane, AnthonyForeign Patent References
International ClassesB01J 023/34B01J 023/44 AbstractA catalyst composition contains a catalytic material having having an undercoat layer containing a mixture of a fine particulate undercoat refractory metal oxide and a sol such as a silica sol, the undercoat providing good adherence to substrates, such as metal substrates, on which the catalytic material is disposed. An overlayer is coated over the underlayer and contains an overlayer refractory metal oxide, which may be the same as or different from the undercoat refractory metal oxide, and on which is dispersed one or more catalytic metal components, such as palladium and manganese components. The metal substrate may be made of, e.g., aluminum or titanium or alloys thereof, and provides a low pressure drop and lightweight catalyst, making the catalyst especially well adapted for use in aircraft to abate ozone in cabin air. A method of making the catalyst composition includes applying the undercoat to the substrate and calcining it, impregnating the overlayer refractory metal oxide with one or more catalytic metal components and depositing the overlayer over the undercoat, and calcining it. |
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