By definition, a catalyst is not consumed or used up. The nature of a catalytic reaction is often defined as:
“A substance, usually present in small amounts related to the reactants, that modifies and especially increases the rate of a chemical reaction without being consumed in the process.”
Firecat combustors manufactured by Applied Ceramics are made of high temperature, honeycomb patterned, ceramic substrate. They are coated with special noble metals. The honeycomb pattern gives the combustor the surface area for the catalytic costing. The noble metals used are palladium and platinum.
These catalytic combustors have been used by the woodstove industry since the first catalytic stoves was designed. Most catalytic stove manufacturers today are still using the Firecat brand as their choice for quality and performance.