定义 镧 系元素(lanthanide element)是元素周期系Ⅲb族中原子序数为57~71的15种化学元素的统称。由于 镧 系元素都是金属,所以又称 镧 系金属。
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There is further described a crystalline catalyst comprising the elements nickel, magnesium, aluminium and a lanthanide element, in which the crystalline phase is a spinel phase.
还描述了包括元素镍、镁、铝 和镧系元素的结晶催化剂,其中结晶相为尖晶石相。
Cerium: chemical element, a rare earth metal of the lanthanide series (hence having many properties of the transition elements), chemical symbol ce, atomic number 58.
铈:化学元素,周期表iii b族过渡金属中丰度最大的稀土金属。化学符号Ce,原子序数58。
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