Environmental control system including ozone-destroying catalytic converter having anodized and washcoat layers
AssigneeHoneywell International Inc.
InventorsDi-Jia Liu, Daniel R. Winstead, Peter M. Michalakos
Life of this patent
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Abstract
An aircraft environmental control system includes a catalytic converter having ozone-destroying capability. A surface of the catalytic converter is anodized to form an anodized layer, and the metal oxide layer is washcoated to form a washcoat layer. An ozone destroying catalyst is impregnated in the anodized and washcoat layers. The catalyst may include one or more metals. For example, a bimetallic catalyst may include a precious metal and a transition metal.
Claims19
An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising:
- a core, the core having an absence of an anodized layer;
- a washcoat layer on the core;
- an ozone-destroying catalyst impregnated in the washcoat layer;
- and
- wherein the washcoat layer comprises a metal oxide and an organosiloxane resin.
An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising:
- a core, the core having an absence of an anodized layer;
- a washcoat layer on the core;
- and
- an ozone-destroying catalyst impregnated in the washcoat layer, the ozone-destroying catalyst comprising at least one precious metal and at least one transition metal;
- wherein the washcoat layer comprises a metal oxide and an organosiloxane resin;
- wherein the metal oxide is a refractory metal oxide chosen from alumina, silica, aluminum silicate, magnesia, manganese oxide, titania, zirconia, ceria, or boehmite;
- and
- wherein the organosiloxane resin is chosen from methylphenylsiloxane or methylsiloxane.
An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising:
- a core, the core having an absence of an anodized layer;
- a washcoat layer on the core, the washcoat comprising a partially hydrated refractory metal and an organosiloxane resin;
- and
- an ozone-destroying catalyst impregnated in the washcoat layer, the ozone-destroying catalyst comprising platinum and cobalt.
Dependencies are inferred from the claim text.