promoteur
- Domaine
-
- chimie
- Date
Terme :
- promoteur n. m.
Traductions
-
anglais
Date :Définition
An element or compound which increases the surface activity and selective effect of a catalyst; the promoting substance is incorporated in the catalyst in low percentages during commercial preparation. Examples are inclusion of alumina in the iron catalyst for ammonia synthesis and potassium with iron or chromium oxide for dehydrocyclization. The promoter alone has no catalytic action.
Termes :
- promotor
- promoter