catalytic properties of lanthanide catalysts (Eu/AC and Yb/AC) prepared by impregnation of active carbon (AC) with liquid ammonia solutions of Eu or Yb metal were carried out for the catalytic hydrogenation of ethene. The lanthanides thus deposited on AC were changed through varied steps (metal, amide, imide or nitride) by thermal treatments and simultaneously the hydrogenation activity varied markedly
研究了用 Eu 或 Yb
金属液
氨溶液浸渍
活性炭(AC)制备的
镧系元素催化剂(Eu/AC 和 Yb/AC)的 X 射线衍射、傅里叶变换红外光谱和催化性能。
乙烯催化加氢。如此沉积在 AC 上的
镧系元素通过热处理通过不同的步骤(
金属、酰胺、
酰亚胺或
氮化物)发生变化,同时氢化活性显着变化。Eu/AC 和 Yb/AC 分别在 573 K 和 773 K 附近进行抽真空处理,即使在 203 K 下也表现出很高的活性。
镧系元素酰胺(Eu(NH2)2、Yb(NH2)2、和 Yb(NH2)3) 分别制备,研究了
酰亚胺和
氮化物以进行比较。