Ruthenium-on-charcoal and ruthenium-on-carbon black hydrogenatio

Details Ruthenium-on-charcoal and ruthenium-on-carbon black hydrogenatio Ruthenium-on-charcoal and ruthenium-on-carbon black hydrogenatio

1982-07-13

1984-08-14

Konopka, P. E.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

260690, 568881, B01J 2389, B01J 2346, C07C 2914, C07B 100

Patent

active

044657870

ABSTRACT:
Ruthenium-on-charcoal and ruthenium-on-carbon black catalysts, containing from 0.1 to 5% by weight of iron, for the preparation of olefinically unsaturated alcohols by selective hydrogenation of the corresponding .alpha.,.beta.-unsaturated carbonyl compounds in the liquid phase are prepared by modifying the catalyst with iron only after it has been impregnated with the ruthenium compound, and reducing the catalyst with hydrogen at from 400.degree. to 600.degree. C., with thorough mixing.
The catalysts according to the invention are particularly useful for improving the industrially difficult hydrogenation of citral to give the sought-after fragrances geraniol and nerol.

REFERENCES:
patent: 3784675 (1974-01-01), Kobylinski et al.
patent: 3912787 (1975-10-01), Nowack et al.
patent: 4212824 (1980-07-01), Seagraves

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