Ruthenium supported catalyst, its preparation and its use in the preparation of substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine
First Claim
1. A Ruthenium catalyst also containing palladium, platinum or palladium and platinum in addition to ruthenium on a support treated with chromium and manganese from the group of Al2 O3 and aluminum spinel containing the noble metals in a total amount of 0.05-5% by weight and a weight ratio of Ru:
- Pd, Ru;
Pt, or Ru;
Pd/Pt of 1;
9-9;
1, the percentages being based on the total weight of the catalyst.
1 Assignment
0 Petitions
Accused Products
Abstract
Substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine can be produced by catalytic hydrogenation of substituted or unsubstituted aniline by using a ruthenium catalyst which in addition to ruthenium also contains palladium, platinum or palladium and platinum on a support from the group consisting of Al2 O3 and aluminum spinel treated with chromium and manganese and containing the noble metals in a total amount of 0.05-5% by weight and a weight ratio of Ru:Pd, Ru:Pt, or Ru:Pd/Pt of 1:9-9:1. All percentages are based on the total weight of the catalyst.
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Citations
18 Claims
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1. A Ruthenium catalyst also containing palladium, platinum or palladium and platinum in addition to ruthenium on a support treated with chromium and manganese from the group of Al2 O3 and aluminum spinel containing the noble metals in a total amount of 0.05-5% by weight and a weight ratio of Ru:
- Pd, Ru;
Pt, or Ru;
Pd/Pt of 1;
9-9;
1, the percentages being based on the total weight of the catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- Pd, Ru;
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15. A process for the preparation of a mixture of substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine by hydrogenation of substituted or unsubstituted aniline with hydrogen in the presence of a ruthenium catalyst, characterized in that the ruthenium catalyst also containing palladium, platinum or palladium and platinum in addition to ruthenium on a support treated with chromium and manganese from the group consisting of Al2 O3 and aluminum spinel containing the noble metals in a total amount of 0.05-5% by weight and a weight ratio of Ru:
- Pd, Ru;
Pt, or Ru;
Pd/Pt of 1;
9-9;
1, the percentages being based on the total weight of the catalyst is used and the reaction is carried out at 80°
-240°
C. at a pressure of 50-500 bar. - View Dependent Claims (16, 17, 18)
- Pd, Ru;
Specification