Polypyridinerhodiumcarbonyl and iridium carbonyl hydride and halide hydroformylation catalysts
AssigneeConoco Inc.
InventorJohn T. Carlock
Life of this patent
Estimating the term…
Abstract
Catalysts of the general structure ##STR1## have been found to be effective heterogeneous hydroformylation catalysts at temperature of from about 60.degree. C. to about 150.degree. C. and hydrogen to carbon monoxide (H.sub.2 /CO) gas pressures of from about 100 to about 3500 psig for both primary and internal olefins. The process produces an increased amount of linear normal aldehydes. At the completion of the hydroformylation reaction, the reactor gas can be altered to essentially pure hydrogen and the catalyst then further converts aldehyde formed by the hydroformylation reaction to alcohols under the same reaction conditions. The copolymer support acts as a ligand and allows the catalyst to be easily recovered.
Claims6
A method for isomerizing internal olefins to primary olefins then hydroformylating the primary olefins formed to aldehydes in the presence of a catalyst having the general structure ##STR3## said isomerization and subsequent hydroformylation both carried out at temperatures of from about 60.degree. C. to about 150.degree. C. and pressures of from about 100 to about 3500 psig in the presence of carbon monoxide and hydrogen, wherein n is from 1 to about 3, m is from 1 to about 2, M is rhodium or iridium, X is selected from the group consisting of chlorine, bromine, iodine, and hydrogen, and P is a heterocyclic nitrogen-containing polymer selected from the group consisting of polyvinylpyridine/divinylbenzene copolymers such as 4-vinylpyridine/divinylbenzene, 3-vinylpyridine/divinylbenzene, 2-vinylpyridine/divinylbenzene;
- also polyphenylquinoxaline/divinylbenzene copolymer, poly[N-vinylcarbazole]/divinylbenzene copolymer and polyvinylimidazole/divinylbenzene copolymer.
Dependencies are inferred from the claim text.