Increasing the life of a supported ruthenium catalyst in the hyd

Details Increasing the life of a supported ruthenium catalyst in the hyd Increasing the life of a supported ruthenium catalyst in the hyd

1980-07-24

1981-11-24

Hines, Robert V.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564511, C07C 8512

Patent

active

043026044

ABSTRACT:
In a process for hydrogenating an olefinically unsaturated dinitrile in which the reactants in a solvent are passed through a ruthenium on alumina catalyst, the improvement which comprises operating at a reduced pressure during the early contact with the catalyst and slowly increasing the pressure over an extended interval of time to normal operating pressure. This startup procedure greatly increases the run length (life) of the catalyst bed.

REFERENCES:
patent: 3369997 (1968-02-01), Hayes et al.
patent: 3408397 (1968-10-01), Feldman et al.
patent: 3896173 (1975-07-01), Drake
patent: 3953511 (1976-04-01), Frech et al.

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