EP0340848A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for the hydrogenation of higher nitriles to amines
Assignee: Unilever PLC
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Filing: 1989-04-26
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Granted: —
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Expires: 2009-04-26
Abstract
Abstract The invention provides a process for the catalytic hydrogenation of C12 to C22 nitrile to amine employing a certain nickel catalyst upon a carrier containing magnesium oxide and silica which contains from 60 to 90% (w.w.) of nickel calculated on the catalyst composition, which has a molar ratio of silica to nickel in the catalyst between 0.10 and 0.30, a molar ratio of magnesium to nickel in the catalyst between 0.25 and 0.05, a mean pore radius of the catalyst between 1.5 and 4.0 nanometers, a pore volume between 0.20 and 0.80 ml/g, an active nickel surface area of the catalyst between 90 and 150 m²/g of nickel and a BET total surface between 100 and 400 m²/g catalyst.
Inventors
- 👤 Johannes Cornelis Oudejans
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:56
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J35/00; B01J35/30; B01J35/391; B01J35/392; B01J35/60; B01J35/61; B01J35/615; B01J35/63; B01J35/633; B01J35/635; C; C07; C07C; C07C209/00; C07C209/44; C07C209/48
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
Process for the catalytic hydrogenation of nitrile to amine employing a nickel catalyst upon a carrier containing magnesium oxide and silica characterized in that a nitrile containing 12 to 22 carbon atoms is hydrogenated with a catalyst that contains from 60 to 90% (w.w.) of nickel calculated on the catalyst composition.
Claim 2
Dependent Claim
51 words
Process for the catalytic hydrogenation of nitrile to amine employing a nickel catalyst upon a carrier containing magnesium oxide and silica characterized in that a nitrile containing 12 to 22 carbon atoms is hydrogenated with a catalyst that contains from 60 to 90% (w.w.) of nickel calculated on the catalyst composition.
Claim 3
Dependent Claim
23 words
Process according to claim 1 characterized in that the molar ratio of silica to nickel in the catalyst is between 0.10 and 0.30.
Claim 4
Dependent Claim
25 words
Process according to claim 1 or 2 characterized in that the molar ratio of magnesium to nickel in the catalyst is between 0.25 and 0.05.
Claim 5
Dependent Claim
31 words
Process according to any of the claims 1 to 3 characterized in that the mean pore radius of the catalyst is between 1.5 and 4.0, preferably between 2.5 and 3.5 nanometers.
Claim 6
Dependent Claim
23 words
Process according to any of the preceding claims characterized in that the pore volume of the catalyst is between 0.20 and 0.80 ml/g.
Claim 7
Dependent Claim
27 words
Process according to any of the preceding claims characterized in that the active nickel surface area of the catalyst is between 90 and 150 m²/g of nickel.
Claim 8
Dependent Claim
25 words
Process according to any of the preceding claims characterized in that the BET total surface of the catalyst is between 100 and 400 m²/g catalyst.
Claim 9
Dependent Claim
62 words
Process according to any of the preceding claims characterized in that the hydrogenation is carried out at a temperature of between 120 and 180°C to obtain primary amine or 150 to 150°C to obtain secondary amine at a partial ammonia pressure of between 1 and 3.5 MPa and when preparing primary amine also a partial ammonia pressure between 1 and 3 MPa.
Claim 10
Dependent Claim
47 words
Process according to claim 9 characterized in that secondary amines are prepared in the higher temperature interval characterized in that no ammonia is added to the reaction mixture and that ammonia formed is removed by repeated venting the autoclave during the reaction and pressurizing again with hydrogen.
Claim 11
Dependent Claim
25 words
Process according to any of the preceding claims characterized in that a higher mononitrile are hydrogenated which contains the carbon atoms in a straight chain.
References Cited (Backward Citations)
No citation records indexed.
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