Gas-phase hydrogenation of propionitrile on copper-lanthanide oxides

✍ Scribed by Joaquim Badalo Branco; Danielle Ballivet-Tkatchenko; António Pires de Matos

• Book ID: 104059178
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 424 KB
• Volume: 307
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2009.03.007

✦ Synopsis

The hydrogenation of propionitrile on copper-lanthanide oxide catalysts (2Cu•CeO 2 and 4Cu•Ln 2 O 3 (Ln = La, Pr, Nd)) was studied in the gas phase. The activity of the catalysts varies with the lanthanide in the order 2Cu

while the activation energies varies in the opposite order, except for 2Cu•CeO 2 . The main product was the primary amine, n-propylamine. The formation of the unstable imine CH 3 CH 2 N CHCH 3 as a major product over 2Cu•CeO 2 seems to be consistent with the acidity of the catalyst. The catalysts were more selective than conventional copper impregnation catalysts, Cu (10 wt.%) on SiO 2 , La 2 O 3 or CeO 2 , that produce significant quantities of the secondary amine.