Selective hydrogenation of adiponitrile over a skeletal Ni–P amorphous catalyst (Raney Ni–P) at 1 atm pressure
Selective hydrogenation of adiponitrile over a skeletal Ni–P amorphous catalyst (Raney Ni–P) at 1 atm pressure
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DOI：
10.1016/s0926-860x(99)00565-7
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发表时间：
2000-06
影响因子：
5.5
通讯作者：
Xibin Yu;Hexing Li;Jingfa Deng
中科院分区：
文献类型：
--
作者：
Xibin Yu;Hexing Li;Jingfa Deng
采用急冷法制备非晶态Ni-Al-P合金，通过碱浸法制备骨架Ni-P非晶态合金催化剂（简称Raney Ni-P）。在常压、473 K、无氨条件下，考察了该催化剂对己二腈（ADN）气固相选择性加氢反应的催化性能。与晶态Raney Ni-P、规则Ni-P非晶态合金、Raney Ni和Ni/Al 2 O3等镍基催化剂相比，该催化剂对1，6-己二胺（HMA）具有更高的活性和选择性。通过BET、H2化学吸附、X射线衍射（XRD）、扩展X射线吸收精细结构（EXAFS）、X射线光电子能谱（XPS）、差示扫描量热法（DSC）等表征手段，探讨了催化剂的结构特征和表面电子态与催化性能的关系。
A skeletal Ni–P amorphous alloy catalyst (referred to Raney Ni–P) was prepared by alkali leaching an amorphous Ni–Al–P alloy obtained by the rapid quenching technique. Its catalytic performance was measured during the selective hydrogenation of adiponitrile (ADN) in gas–solid phase at 1atm pressure, 473K, and in the absence of ammonia. The as-prepared catalyst exhibited higher activity and better selectivity toward 1,6-hexanediamine (HMA) than other Ni-based catalysts, such as the crystalline Raney Ni–P, regular Ni–P amorphous alloy catalyst, Raney Ni, and Ni/Al2O3. According to various characterizations, such as BET, H2chemisorption, X-ray diffraction (XRD), extended X-ray absorption fine structure measurements (EXAFS), X-ray photoelectron spectroscopy (XPS), and differential scanning calorimetry (DSC), the correlations of the structural characteristics and the surface electronic states to the catalytic behavior were discussed.