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Platinum black   /plˈætnəm blæk/   Listen
Platinum black

noun
1.
A fine black powder of platinum; used as a catalyst in chemical reactions.





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"Platinum black" Quotes from Famous Books



... fluid combination, with zinc positive plate, and a plate of silver, coated with platinum black, for the negative plate. The finely divided platinum affords a surface from which the hydrogen bubbles instantly detach themselves, thus preventing polarization. The liquid is a mixture of one part sulphuric acid to seven ...
— The Standard Electrical Dictionary - A Popular Dictionary of Words and Terms Used in the Practice - of Electrical Engineering • T. O'Conor Slone


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