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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.
Adams' catalyst is used for many applications. It has shown to be valuable for hydrogenation, hydrogenolysis, dehydrogenation, and oxidation reactions. During the reaction, platinum metal (platinum black) is formed which has been cited to be the active catalyst.
Platinum(IV) oxide, PtO 2, also known as "Adams' catalyst", is a black powder that is soluble in potassium hydroxide (KOH) solutions and concentrated acids. [41] PtO 2 and the less common PtO both decompose upon heating. [ 13 ]
All the noble metals can act as catalysts. For example, platinum is used in catalytic converters, devices which convert toxic gases produced in car engines, such as the oxides of nitrogen, into non-polluting substances. [citation needed] Gold has many industrial applications; it is used as a catalyst in hydrogenation and the water gas shift ...
Platinum is the most promising candidate among pure metals for application in DMFCs. Platinum has the highest activity toward the dissociative adsorption of methanol. However, pure Pt surfaces are poisoned by carbon monoxide, a byproduct of methanol oxidation. Researchers have focused on dispersing nanostructured catalysts on high surface area ...
a high intrinsic exchange current density for proton reduction on platinum; excellent reproducibility of the potential (bias of less than 10 μV when two well-made hydrogen electrodes are compared with one another) [5] The surface of platinum is platinized (i.e., covered with a layer of fine powdered platinum also known as platinum black) to:
Loaded Black Bean Nacho Soup. Jazz up a can of black bean soup with your favorite nacho toppings, such as cheese, avocado and fresh tomatoes. A bit of smoked paprika adds a bold flavor kick, but ...
The negative hydrogen electrode utilises a teflon-bonded platinum black catalyst at a loading of 7 mg/cm2 and the separator is knit zirconia cloth (ZYK-15 Zircar). [21] [22] The Hubble replacement batteries are produced with a wet slurry process where a binder agent and powdered metallic materials are molded and heated to boil off the liquid. [23]