B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/75 (2006.01) B01J 23/74 (2006.01) B01J 23/755 (2006.01) B01J 25/00 (2006.01) C07C 209/48 (2006.01) C07C 211/07 (2006.01) C07C 211/27 (2006.01) C07D 213/73 (2006.01) C07D 239/42 (2006.01)
Patent
CA 2328116
A process for the modification of a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type comprises treating the hydrogenation catalyst at temperatures of about 0°C to about 120°C with carbon monoxide, carbon dioxide, formaldehyde, a lower aliphatic aldehyde, an aromatic aldehyde, an aliphatic ketone, an aromatic ketone, a mixed aliphatic/aromatic ketone, glyoxal, pyruvaldehyde or glyoxylic acid as the modification agent in a liquid dispersion medium consisting of water or an organic solvent for a duration of about 15 minutes to about 24 hours. As a consequence of the process, when the thus-modified catalyst is used in the hydrogenation of a nitrite to the corresponding amine the selectivity is increased, whereby the increased selectivity favours significantly the amount of the primary amine vis-à-vis the undesired secondary amine in the hydrogenation product compared with the case when the corresponding unmodified catalyst is employed. The present invention concerns in a second aspect the process for the hydrogenation of a nitrite to the corresponding primary amine using a thus- modified catalyst.
Degischer Oliver Gerald
Roessler Felix
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
LandOfFree
Modification of a hydrogenation catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modification of a hydrogenation catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modification of a hydrogenation catalyst will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1696243