platinum black

noun

, Chemistry.

1. a black powder consisting of very finely divided metallic platinum, used as a catalyst, especially in organic synthesis.

platinum black

noun

1. chem a black powder consisting of very finely divided platinum metal. It is used as a catalyst, esp in hydrogenation reactions

Word History and Origins

Origin of platinum black¹

First recorded in 1850–55

Example Sentences

Acetylene combines with hydrogen in the presence of platinum black, and ethylene and then ethane result.

From Project Gutenberg

Platinum black is simply platinum in a fine state of division, and is readily obtained as follows:—1.

From Project Gutenberg