promoter
n. countablen. a substance that you add to a catalyst to make it work even better. It does not do the job on its own, but it helps the main chemical reaction happen faster or more easily.
n. a substance added to a catalyst to increase its activity or selectivity in a chemical reaction. It is not a catalyst itself but modifies the surface or electronic properties of the primary catalytic agent.
The scientist added a promoter to speed up the chemical reaction.
In the production of ammonia, small amounts of potassium are used as a promoter to enhance the iron catalyst's efficiency.
The research team investigated how different alkali metal promoters affect the structural stability of the cobalt catalyst during long-term exposure to high-pressure carbon monoxide.
From promote + -er.
Commonly used in industrial chemistry contexts; often followed by the preposition 'for' or 'of' when specifying the catalyst it assists.