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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

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Word History and Origins

Origin of platinum black1

First recorded in 1850–55

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Example Sentences

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

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

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