The continuous synthesis of bis[3-(dimethylamino)propyl]amine (BPA) by hydrogenation of 3-(dimethylamino)-propionitrile (PN) in the presence of 3-(N,N-dimethylamino)propylamine (PA) over copper-based catalysts was investigated. It was found that Cu-Cr₂O₃-CoO/γ-Al₂O₃ yielded satisfactory results with almost 100% PN conversion and 88.5% BPA selectivity (H₂ pressure: 1 Mpa, temperature: 100 °C, PN/PA ratio: 2:1). All catalysts were characterized by XRD, XPS, H₂-TPR, and TEM, the obtained results indicated that Cr could improve the catalytic activity. Moreover, Co dispersed around Cu particles promoted the catalytic nature, which could further enhance the activity and stability of the catalyst.

在3-（N，N-二甲基氨基）丙胺（PA）存在下，通过3-（二甲基氨基）-丙腈（PN）的氢化反应，连续合成双[3-（二甲基氨基）丙基]胺（BPA）。对基于碱的催化剂进行了研究。据发现，的Cu-Cr ₂ ö ₃ -CoO /γ-Al系₂ ö _3个产生具有几乎100％的转化率PN和88.5％的BPA选择性令人满意的结果（H ₂压力：1MPa时，温度：100℃，PN / PA比例：2：1）。所有催化剂均通过XRD，XPS，H ₂表征-TPR和TEM，所得结果表明Cr可以提高催化活性。而且，分散在铜颗粒周围的钴提高了催化性能，可以进一步提高催化剂的活性和稳定性。