Method of reactivating Group VIII anionic hydroformylation catal

Details Method of reactivating Group VIII anionic hydroformylation catal Method of reactivating Group VIII anionic hydroformylation catal

1984-04-16

1985-10-15

Lone, Werren B.

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

Organic compounds

Oxygen containing

502514, 568909, C07C 4550

Patent

active

045475954

ABSTRACT:
A method of reactivating anionic Group VIII hydroformylation catalysts to maintain high selectivity towards linear products. In the process of manufacturing aldehydes and alcohols from olefins, hydrogen, carbon monoxide and a catalyst, the selectivity for linear products is extremely high when an anionic Group VIII catalyst is used. This selectivity, after prolonged use of a catalyst, falls off along with the turnover number. The catalyst is reactivated to increase the selectivity towards linear products as well as the turnover number by subjecting the catalyst to a reducing agent which is strong enough under treatment conditions to reduce the anionic Group VIII catalyst. Reactivation of anionic iron, ruthenium, osmium, and mixed transition metal complex catalysts are particularly described and claimed.

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