利用旋铸法制备了快速凝固 Ni3 1.5Al68.5合金 ,结合常规 Ni- Al合金对其结构特征和十八腈加氢催化性能进行了研究。结果表明 ,快凝 Ni- Al合金中 Ni2 Al3 和Ni Al3 相的含量显著增加 ,α- Al相的含量大幅减小 ;与常规 Raney Ni催化剂相比 ,快凝 Ni- Al合金活化后制得的新型 Raney Ni催化剂中 Ni的晶格常数增大 ,晶粒细化 ,比表面积增加 ,孔径尺寸减小 ,在制备伯胺和仲胺两种选择性反应中均显示出较高的活性和选择性。 The rapid solidification Ni3 1.5Al68.5 alloy was prepared by spin casting method, and its structural characteristics and octadecanonitrile hydrogenation catalytic performance were studied in combination with conventional Ni-Al alloy. The results show that the content of Ni2Al3 and NiAl3 phase in the rapidly solidified Ni-Al alloy increases significantly and the content of α-Al phase decreases significantly. Compared with the conventional Raney Ni catalyst, In the novel Raney Ni catalyst, the lattice constant of Ni increases, the grain refinement, the specific surface area increases and the pore size decreases, showing high activity and selectivity in the two selective reactions of preparing primary amine and secondary amine .