What does platinum black mean?

Definitions for platinum black
plat·inum black

This dictionary definitions page includes all the possible meanings, example usage and translations of the word platinum black.

Princeton's WordNet

  1. platinum blacknoun

    a fine black powder of platinum; used as a catalyst in chemical reactions

Wikipedia

  1. Platinum black

    Platinum black (Pt black) is a fine powder of platinum with good catalytic properties. The name of platinum black is due to its black color. It is used in many ways; as a thin film electrode, a fuel cell membrane catalyst, or as a catalytic ignition of flammable gases for "self-lighting' gas lamps, ovens, and stove burners.

ChatGPT

  1. platinum black

    Platinum black is a fine powder of platinum with good catalytic properties. It is used in catalysis, gas detection, fuel cells and other applications. The term "black" refers to its dark, powdery appearance. It has a much greater surface area compared to platinum in bulk, making it highly desired for various chemical processes.

Wikidata

  1. Platinum black

    Platinum black is a fine powder of platinum with good catalytic properties. The name of platinum black is due to its black color. Platinum black is widely used as a thin film covering solid platinum metal, forming platinum electrodes for applications in electrochemistry. The process of covering platinum electrodes with such a layer of platinum black is called "platinization of platinum". The platinized platinum has a true surface area much higher than the geometrical surface area of the electrode and, therefore, exhibits catalytic action superior to that of shiny platinum. Platinum black powder is used as a catalyst in proton exchange membrane fuel cells. In common practice, the platinum black is either sprayed or hot pressed onto the membrane or gas diffusion layer. A suspension of platinum black and carbon powder in ethanol-water solutions serves to optimize the uniformity of the coating, electrical conductivity, and in the case of application to the membrane, to prevent dehydration of the membrane during the application.

The Standard Electrical Dictionary

  1. Platinum Black

    Finely divided platinum. It is made by boiling a solution of platinic chloride with excess of sodium carbonate and a quantity of sugar, until the precipitate is perfectly black and the supernatant liquid is colorless. It seems to possess a great power of occluding oxygen gas. When heated to redness it becomes spongy platinum. The negative plates of a Smee battery are coated with platinum black.

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Numerology

  1. Chaldean Numerology

    The numerical value of platinum black in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of platinum black in Pythagorean Numerology is: 9


Translations for platinum black

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"platinum black." Definitions.net. STANDS4 LLC, 2024. Web. 18 Jun 2024. <https://www.definitions.net/definition/platinum+black>.

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    pass through the tissue or substance or its pores or interstices, as of gas
    A cleave
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