초록 ▼

Branched alkyl diaryl phosphine rhodium carbonyl hydride complexes are surprisingly effective, stable and selective hydroformylation catalysts particularly in the presence of a large excess of t-phosphine ligands. As such, they are advantageously employed as catalysts in a novel low pressure rhodium

Branched alkyl diaryl phosphine rhodium carbonyl hydride complexes are surprisingly effective, stable and selective hydroformylation catalysts particularly in the presence of a large excess of t-phosphine ligands. As such, they are advantageously employed as catalysts in a novel low pressure rhodium hydroformylation process producing normal and iso aldehydes by reacting olefins with H2 and CO.

대표청구항 ▼

In a process for the hydroformylation of a C3 to C40 aliphatic, unsubstituted monoolefin to produce an aldehyde having one more carbon atom than the olefin comprising reacting said olefin with hydrogen and carbon monoxide in a liquid reaction medium which contains a bbbb50°to about 200°C., a total g

In a process for the hydroformylation of a C3 to C40 aliphatic, unsubstituted monoolefin to produce an aldehyde having one more carbon atom than the olefin comprising reacting said olefin with hydrogen and carbon monoxide in a liquid reaction medium which contains a bbbb50°to about 200°C., a total gas pressure of hydrogen, carbon monoxide and olefin of about 16 to about 1015 psia, a carbon monoxide partial pressure of less than 215 psia, a hydrogen partial pressure of about 65 to about 515 psia, and ligand/rhodium molar ratio of about 40 to 3,000, the improvement comprising improving the stability of said catalyst against deactivation by employing said phosphine ligand in excess.