What materials typically make up catalyst-equipped appliances?

Catalyst-equipped appliances rely on specific materials and design features that enhance their efficiency and reduce emissions. The correct answer highlights the use of ceramic or stainless steel substrates combined with a platinum or palladium catalyst.

These materials are specifically chosen for their ability to withstand high temperatures and their excellent catalytic properties, which significantly increase the efficiency of the combustion process. Platinum and palladium are noble metals often used in catalytic converters because they help in lowering the emissions of harmful substances by facilitating chemical reactions at lower temperatures.

Ceramic substrates provide a lightweight yet durable base for catalysis, while stainless steel is valued for its resistance to corrosion and ease of maintenance. The combination of these materials in catalyst-equipped appliances ensures optimal performance and compliance with environmental standards.