Patent ID: 11883796
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 15:
16. A method of removing contaminants from pressurized air for an environmental control system (ECS), comprising:
receiving, by a component of the ECS, the pressurized air from a pressurized air source, wherein the pressurized air includes hydrocarbons or ozone, and wherein the component includes a hydrocarbon and ozone catalyst comprising one or more catalytic layers overlying one or more surfaces of the component, wherein the one or more catalytic layers comprise:
a non-catalytic component comprising titanium oxide;
an ozone catalytic component comprising cobalt oxide; and
a hydrocarbon catalytic component comprising platinum,
wherein an outermost layer of the one or more catalytic layers includes the hydrocarbon catalytic component distributed in the non-catalytic component,
wherein the non-catalytic component, the ozone catalytic component, and the hydrocarbon catalytic component are each formed from a washcoat and present in the one or more catalytic layers as particles adhered together,
wherein the hydrocarbond catalytic component comprises hydrocarbon catalytic particles having an average particle size less than about 15 nanometers,
wherein the non-catalytic component comprises non-catalytic particles having an average particle size between about 15 nanometers and about 30 nanometers, and
wherein the ozone catalytic component comprises ozone catalytic particles having an average particle size less than about 15 micrometers; and

converting, by the hydrocarbon and ozone catalyst, at least a portion of the ozone to oxygen and at least a portion of the hydrocarbons to carbon dioxide and water.