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单词 Paladium
释义

Paladium

中文百科

钯 Palladium

(重定向自Paladium)

是一种化学元素,化学符号为Pd,原子序数46。钯的拉丁名称Palladium是以小行星智神星来命名的,另一种以小行星来命名的元素是铈。

钯是一种罕见的、有光泽的银白色金属,钯与铂、铑、钌、铱、锇形成一组铂族金属的元素家族。铂族金属化学性质相似,但钯的熔点最低,是这些贵金属中密度最低的一种。

在实验室里,经常把一氧化碳通入稀氯化钯溶液中来制取钯:

 PdCl_{2} + CO+H_{2}O = Pd\downarrow + CO_{2}\uparrow+ 2HCl(aq)

钯是一种过渡金属,性质像铂,可在铜及镍的矿石中提炼。它主要用作工业上的催化剂(钯催化偶联反应)及白金首饰,另外,它可以吸收比自身体积大900倍的氢气。

英语百科

Palladium 钯

(重定向自Paladium)
Palladium(II) oxide forms on the surface of palladium when heated above 800 °C in air
Palladium(II) chloride
Palladium(II) acetate

Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them.

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