Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan.
Chemphyschem. 2013 Aug 5;14(11):2534-8. doi: 10.1002/cphc.201300260. Epub 2013 May 29.
Skeletal Ni catalysts were prepared from an amorphous Ni40Zr60 alloy (a-NiZr) by heating at various temperatures under vacuum, followed by the selective extraction of Zr moieties by an HF treatment. Each sample was characterized by various spectroscopic methods, and the catalytic performance was tested in the hydrogenation of 1-octene. The differences in preparation temperatures of a-NiZr strongly affected the catalytic performance of the obtained catalysts, whereby those prepared from heated a-NiZr in the pre-crystallization state exhibited higher catalytic activity. Especially, moderate thermal treatment of a-NiZr at a temperature slightly lower than that for its crystallization, that is, ~573 K, resulted in a significant enhancement of the catalytic activity. Such prepared skeletal Ni catalyst can also be used efficiently for hydrogen generation from aqueous hydrazine.
采用真空热处理的方法，从非晶态 Ni40Zr60 合金(a-NiZr)中制备了骨架 Ni 催化剂，通过 HF 处理选择性地提取 Zr 部分。采用各种光谱方法对每个样品进行了表征，并在 1-辛烯的加氢反应中测试了其催化性能。a-NiZr 的不同制备温度对所得催化剂的催化性能有很大的影响，其中由处于预晶化状态的加热 a-NiZr 制备的催化剂表现出更高的催化活性。特别是，在略低于其结晶温度(即~573 K)的温度下对 a-NiZr 进行适度的热处理，会显著提高催化活性。这种制备的骨架 Ni 催化剂也可有效地用于水合肼的制氢反应。
