High efficiency combined hydrocarbon and ozone converter

An apparatus, comprising:

• a substrate;
• and
• one or more catalytic layers overlying the substrate, 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 hydrocarbon catalytic component comprises hydrocarbon catalytic particles having an average particle size less than 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.

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.