catalytic promoter; promoter
Technical term in chemistry for a substance that enhances the activity of a catalyst, often used in industrial catalysis.
By adding a promoter, the activity of the catalyst was greatly improved.
In this reaction, an alkali metal is used as a promoter.
Compound of 助 (jo, 'assist') and 触媒 (shokubai, 'catalyst'). The term is a direct calque from English 'promoter' in the catalytic sense.