Catalyst and a benzene hydrogenation process using said catalyst

Details Catalyst and a benzene hydrogenation process using said catalyst Catalyst and a benzene hydrogenation process using said catalyst

1995-02-16

1997-09-16

Caldarola, Glenn A.

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Hydrocarbon is aromatic

585270, 502170, 502171, C07C 510

Patent

active

056682930

ABSTRACT:
The invention concerns a process and catalyst for the production of cyclohexane by hydrogenation of benzene, comprising at least the two following steps: a) gradually introducing the feed of benzene for hydrogenation and a hydrogen-rich gas into a reaction zone containing a cyclohexane-rich liquid and a nickel-based catalyst in colloidal suspension and recovering a gaseous phase containing cyclohexane, hydrogen and benzene; b) introducing the gaseous phase into a reactor operating under hydrogenation conditions and containing at least one fixed bed of a solid nickel-based hydrogenation catalyst, wherein the nickel-based catalyst used in step a) is a product which results from the reduction, by at least one trialkylaluminium compound, of a solution of at least one nickel carboxylate and at least one sodium carboxylate in solution, the Ni:Na molar ratio being between 2:1 and 1000:1 in a hydrocarbon or a hydrocarbon mixture.

REFERENCES:
patent: 3531448 (1970-09-01), Johnson
patent: 3591649 (1971-07-01), Kroll et al.
patent: 3840608 (1974-10-01), Suggitt et al.
patent: 4357478 (1982-11-01), Hillion et al.
Chemical Abstracts, vol. 113, No. 23 (211547y), Dec. 3, 1990, p. 722.

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