• 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.

    描述包括元素元素结晶催化剂其中结晶晶石相。

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  • 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.

    化学元素,周期表iii b族过渡金属丰度最大稀土金属。化学符号Ce原子序数58。

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  • 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.

    化学元素,周期表iii b族过渡金属丰度最大稀土金属。化学符号Ce原子序数58。

    youdao

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