[EN] HYDROFORMYLATION PROCESS USING A SYMMETRIC BISPHOSPHITE LIGAND FOR IMPROVED CONTROL OVER PRODUCT ISOMERS [FR] PROCÉDÉ D'HYDROFORMYLATION UTILISANT UN LIGAND BIPHOSPHITE SYMÉTRIQUE POUR UN CONTRÔLE AMÉLIORÉ SUR LES ISOMÈRES DES PRODUITS
CALIXARENE BISPHOSPHITE LIGAND FOR USE IN HYDROFORMYLATION PROCESSES
申请人:Brammer Michael A.
公开号:US20100044628A1
公开(公告)日:2010-02-25
A calixarene bisphosphite composition for use as a ligand in a transition metal-ligand complex catalyst and in a complex catalyst precursor. The ligand is especially useful in catalysts and catalyst precursors for hydroformylation processes wherein a raffinate stream comprising a mixture of alpha, beta, and iso-olefinic isomers is hydroformylated in the presence of carbon monoxide, hydrogen, and the transition metal-ligand complex catalyst to form a mixture of linear and branched aldehyde products. The complex catalyst selectively converts the alpha and beta olefin reactants more rapidly than the iso-olefin reactant resulting in an improved molar ratio of normal (linear) to branched aldehyde products. The unconverted iso-olefinic isomer is thereafter readily separated from the aldehyde product mixture.
HYDROFORMYLATION PROCESS USING A SYMMETRIC BISPHOSPHITE LIGAND FOR IMPROVED CONTROL OVER PRODUCT ISOMERS
申请人:Brammer Michael A.
公开号:US20110144392A1
公开(公告)日:2011-06-16
A process for hydroformylating an α-olefin to produce two or more aldehydes comprising a normal aldehyde and one or more iso-aldehydes with a target molar ratio of the normal aldehyde to one or more iso-aldehydes in a selectable range from 3/1 to 60/1. The process uses a transition metal-ligand complex catalyst comprising a symmetric calixarene bisphosphite ligand. The target N/I ratio is selected by controlling carbon monoxide partial pressure.