Selective heterogeneous catalytic hydrogenation of nitriles to primary amines in liquid phase

Folyadékfázisú, heterogén katalitikus reakciók alkalmazása szerves kémiai szintézisekben

“…Kvantumkémiai számításokkal valószínûsítettük a szelektivitáscsökkenés okait (eltérõ adszorpciós kölcsönhatások). 7 4. Ábra.…”

Formation and nitrile hydrogenation performance of Ru nanoparticles on a K-doped Al2O3 surface

“…Reductive amination of aldehydes and ketones and hydrogenation of nitriles are wellknown amine preparation methods. [14][15][16][17][18][19][20][21][22][23][24] Several transition metals, for example, Co, Ni, Ru, Rh, Cu, Pd, and Pt, have been investigated as active catalysts for nitrile hydrogenation. The addition of ammonia or base additives is a typical method for reducing these unfavorable intermediates, and improvements of primary amine selectivity have been reported for catalysts including [RuCl 2 (PPh 3 ) 3 ], 9,10 M/NaY and M-Ni/NaY (M: Ru, Rh, Pd, and Pt), 11 RANEY s Ni, and Co. 12,13 Selective hydrogenation catalysts for primary amines that do not require ammonia are particularly attractive.…”

Role of acid sites and surface hydroxyl groups in isophthalonitrile hydrogenation catalyzed by supported Ni–Co catalysts

“…1 Although the skeleton structure of Raney® catalysts favors a high catalytic activity, it causes low mechanical strength and bad regeneration capability, leading to a very high catalyst consumption. 2,[9][10][11][12][13][14][15] The supported catalysts have good mechanical strength provided by the support, and the m-XDA selectivity can be enhanced by optimizing both the metal composition and the support. Recently, the supported metal catalysts with metals from group VIII such as Pd, Pt, Ru, Ni and Co as the active component have attracted more attentions.…”