Platinum Black
Cas No: 7440-06-4
Molecular formula: Pt
Molecular weight: 195.08
Appearance: black powder
Application scope：
Electronic materials, surfactants, important contact coal
The extremely fine powder of platinum is black, so it is called platinum black. Apparent density: 15.8-17.6. Element symbol Pt, atomic weight 195.05. Black powder. Can absorb a large number of hydrogen at 0 ℃. Insoluble in inorganic or organic acids. Soluble in aqua regia. Used as catalyst and gas absorbent. Platinum black can be prepared by burning or electrolyzing chloroplatinic acid. Generally, it can be accumulated on the surface of asbestos or other porous materials. If asbestos is immersed in a solution of chloroplatinic acid or ammonium chloroplatinic acid, and then taken out and burned, platinum cotton can be obtained. Platinum black, platinum (stone) cotton can adsorb a large number of hydrogen, oxygen and other gases, in many gas reactions can be used as a catalyst. Such as the oxidation of ammonia. Electrolysis of chloroplatinic acid can also make platinum black plated on the surface of platinum or gold electrode, which is often used as hydrogen electrode or other gas electrode in electrochemistry. Platinum black can be reduced from platinum salt solution by adding zinc or magnesium. Store at room temperature, dry and sealed.
P&C parameters：
|
Pt content,wt% |
99.9% |
|
Particle size |
<10nm |
|
BET specific surface area |
40~60m2/g |
|
The density of |
5.78g/cm3 |
|
Melting point |
1769℃ |
|
The boiling point |
3827℃ |
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