由机械合金镍铝化物制备的Raney镍催化剂的CsCl结构

E.Yu. Ivanov, G.V. Golybkova, T.F. Grigorieva
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引用次数: 22

摘要

经20% KOH溶液处理后,组成Ni35Al65的机械合金镍铝化物仍保持CsCl结构。所制得的Raney镍催化剂被鉴定为具有cscl型结构。将该亚稳材料在120-150℃下退火,形成立方镍结构。这种相变伴随着强铁磁性的出现。
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The CsCl structure of the Raney nickel catalyst obtained from mechanically alloyed nickel aluminides

Mechanically alloyed nickel aluminide of composition Ni35Al65 retains its CsCl structure after being treated with 20% KOH solution. The Raney nickel catalyst thus obtained was identified as having a CsCl-type structure. Annealing of this metastable material at 120–150°C led to the formation of a cubic nickel structure. This phase transformation was accompanied by the appearance of strong ferromagnetism.

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