e/Palladium black

Information
has gloss	eng: Palladium black is a coarse, sponge-like form of palladium that offers a large surface area for hydrogen adsorption. It can be used as a catalyst for hydrogenation reactions.
lexicalization	eng: Palladium Black
instance of	(noun) a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry palladium, Pd, atomic number 46