C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 209/48 (2006.01) B01J 25/02 (2006.01) C07C 211/12 (2006.01)
Patent
CA 2631124
The invention relates to a method for hydrogenating oligonitriles containing at least two nitrile groups in the presence of a catalyst which is pre-treated by being contacted with a compound A prior to the hydrogenation process, said compound A being selected among alkali metal carbonates, alkaline earth metal carbonates, ammonium carbonate, alkali metal hydrogen carbonates, alkaline earth metal hydrogen carbonates, ammonium hydrogen carbonate, alkaline earth metal oxocarbonates, alkali metal carboxylates, alkaline earth metal carboxylates, ammonium carboxylates, alkali metal dihydrogen phosphates, alkaline earth metal dihydrogen phosphates, alkali metal hydrogen phosphates, alkaline earth metal hydrogen phosphates, alkali metal phosphates, alkaline earth metal phosphates and ammonium phosphate, alkali metal acetates, alkaline earth metal acetates, ammonium acetate, alkali metal formates, alkaline earth metal formates, ammonium formate, alkali metal oxalates, alkaline earth metal oxalates, and ammonium oxalate.
L'invention concerne un procédé d'hydrogénation d'oligo-nitriles qui présentent au moins deux groupes nitrile, en présence d'un catalyseur qui est prétraité avant le début de l'hydrogénation par mise en contact avec un composé A qui est sélectionné parmi des carbonates de métaux alcalins, carbonates de métaux alcalino-terreux, carbonate d'ammonium, hydrogénocarbonates de métaux alcalins, hydrogénocarbonates de métaux alcalino-terreux, hydrogénocarbonate d'ammonium, oxocarbonates de métaux alcalino-terreux, carboxylates de métaux alcalins, carboxylates de métaux alcalino-terreux, carboxylates d'ammonium, dihydrogénophosphates de métaux alcalins, dihydrogénophosphates de métaux alcalino-terreux, hydrogénophosphates de métaux alcalins, hydrogénophosphates de métaux alcalino-terreux, phosphates de métaux alcalins, phosphates de métaux alcalino-terreux et phosphate d'ammonium, acétates de métaux alcalins, acétates de métaux alcalino-terreux, acétate d'ammonium, formiates de métaux alcalins, formiates de métaux alcalino-terreux, formiate d'ammonium, oxalates de métaux alcalins, oxalates de métaux alcalino-terreux et oxalate d'ammonium.
Ernst Martin
Hahn Thilo
Melder Johann-Peter
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