The stability of platinum catalysts is still acceptable, but it depends on the use environment. In environments containing sulfur and sulfides, carbon monoxide, carbon formation, coking, etc., it is easy to become deactivated and lose its proper catalytic effect.
Platinum catalyst is a general term for a catalyst made of metal platinum as the main active component. Use platinum metal mesh, platinum black, or platinum on a carrier such as alumina, and may also contain cocatalyst components such as metal rhenium.
The poisons of platinum catalysts mainly include sulfur and sulfide, carbon monoxide, carbonization, coking, etc. The poisoned platinum catalyst can be reactivated through steps such as charring and regeneration under hydrogen flow. After regeneration, the catalyst with restored activity can react again. Completely deactivated platinum catalysts can be used to recover metallic platinum through steps such as acid dissolution.

Platinum catalyst