english: Catalysts can only speed up the reaction – chemicals that slow down the reaction are called inhibitors.[33][34] Substances that increase the activity of catalysts are called promoters, and substances that deactivate catalysts are called catalytic poisons.
non_english: Fungsi katalis namung mempercepat reaksi - zat kimia ingkang ngelambataken reaksi dipunsebat kaliyan inhibitor.[27][28] Substansi yang meningkatkan aktivitas katalis dipunsebat promoter, lan substansi ingkang mematikan katalis dipunsebat racun katalis.