Method for partially hydrogenating a monocyclic aromatic hydroca

Details Method for partially hydrogenating a monocyclic aromatic hydroca Method for partially hydrogenating a monocyclic aromatic hydroca

1993-01-21

1995-10-10

Achutamurthy, P.

Chemistry of hydrocarbon compounds

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

Hydrocarbon is aromatic

585266, 585273, 585277, 422215, C07C 511

Patent

active

054572517

ABSTRACT:
Disclosed is a method for partially hydrogenating a monocyclic aromatic hydrocarbon to produce a cycloolefin, comprising reacting a monocyclic aromatic hydrocarbon with hydrogen in the presence of a particulate hydrogenation catalyst comprised mainly of metallic ruthenium, in a reaction system comprising a continuous aqueous phase having the particulate hydrogenation catalyst suspended therein, an oil phase containing the monocyclic aromatic hydrocarbon, and a gaseous phase comprising hydrogen gas, while applying a shearing force to the reaction system at a specific maximum shear rate. By the method of the present invention, not only can a cycloolefin be produced at high selectivity and in high yield, but also the catalytic activity can be stably maintained at a high level for a prolonged period of time.

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patent: 4495373 (1985-10-01), Niwa et al.
patent: 4734536 (1988-03-01), Nagahara et al.
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European Search Report of May 6, 1993.

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