[EN] CATALYST COMPOSITION COMPRISING THE COMBINATION OF A MONOPHOPSPHINE, A TETRAPHOSPHINE LIGAND AND A HYDROFORMYLATION PROCESS USING IT [FR] COMPOSITION DE CATALYSEUR COMPRENANT LA COMBINAISON D'UNE MONOPHOPSPHINE, D'UN LIGAND DE TÉTRAPHOSPHINE ET PROCESSUS D'HYDROFORMYLATION L'UTILISANT
Synthesis and Application of Tetraphosphane Ligands in Rhodium-Catalyzed Hydroformylation of Terminal Olefins: High Regioselectivity at High Temperature
A new class of substituted tetraphosphane ligands has been developed and applied in the rhodium‐catalyzed regioselective hydroformylation of terminal olefins. The high regioselectivity (linear selectivity is above 97 % for 1‐octene and 1‐hexene) at high temperature (140 °C) shown by these tetraphosphane ligands is remarkable considering the low regioselectivity commonly observed under similar reaction
[EN] METHODS OF CONTROLLING HYDROFORMYLATION PROCESSES<br/>[FR] PROCÉDÉS DE COMMANDE DE PROCESSUS D'HYDROFORMYLATION
申请人:DOW TECHNOLOGY INVESTMENTS LLC
公开号:WO2019231611A1
公开(公告)日:2019-12-05
The present invention relates to methods of controlling hydroformylation processes for producing normal (N) and iso (I) aldehydes at a N:I ratio. In one aspect, a method of controlling a hydroformylation process comprises contacting an olefin with carbon monoxide, hydrogen and a catalyst, the catalyst comprising (A) a transition metal, (B) a monophosphine, and (C) a tetraphosphine having the structure described herein, the contacting conducted in one or more reaction zones and at hydroformylation conditions to produce a blend of normal (N) and iso (I) aldehydes at a N:I ratio, the method comprising at least one of increasing the N:I ratio by adding additional tetraphosphine to a reaction zone; decreasing the N:I ratio by adding additional monophosphine to a reaction zone; or increasing the N:I ratio by volatilization of the free monophosphine.
[EN] METHODS FOR SLOWING DEACTIVATION OF A CATALYST AND/OR SLOWING TETRAPHOSPHINE LIGAND USAGE IN HYDROFORMYLATION PROCESSES<br/>[FR] PROCÉDÉS DE RALENTISSEMENT DE LA DÉSACTIVATION D'UN CATALYSEUR ET/OU DE RALENTISSEMENT DE L'UTILISATION D'UN LIGAND TÉTRAPHOSPHINE DANS DES PROCESSUS D'HYDROFORMYLATION
申请人:DOW TECHNOLOGY INVESTMENTS LLC
公开号:WO2019231610A1
公开(公告)日:2019-12-05
The present invention relates to methods for slowing deactivation of a catalyst and/or slowing tetraphosphine ligand usage in a hydroformylation process. In one aspect, a method comprises (a) contacting an olefin with carbon monoxide, hydrogen and a catalyst, the catalyst comprising (A) a transition metal, (B) a tetraphosphine having the structure described herein, and, optionally, (C) a monophosphine having the structure described herein, the contacting conducted in one or more reaction zones and at hydroformylation conditions; and (b) adding additional monophosphine having the structure described herein to a reaction zone.
Methods for slowing deactivation of a catalyst and/or slowing tetraphosphine ligand usage in hydroformylation processes
申请人:Dow Technology Investments LLC
公开号:US11130725B2
公开(公告)日:2021-09-28
The present invention relates to methods for slowing deactivation of a catalyst and/or slowing tetraphosphine ligand usage in a hydroformylation process. In one aspect, a method comprises (a) contacting an olefin with carbon monoxide, hydrogen and a catalyst, the catalyst comprising (A) a transition metal, (B) a tetraphosphine having the structure described herein, and, optionally, (C) a monophosphine having the structure described herein, the contacting conducted in one or more reaction zones and at hydroformylation conditions; and (b) adding additional monophosphine having the structure described herein to a reaction zone.
The present invention relates to methods of controlling hydroformylation processes for producing normal (N) and iso (I) aldehydes at a N:I ratio. In one aspect, a method of controlling a hydroformylation process comprises contacting an olefin with carbon monoxide, hydrogen and a catalyst, the catalyst comprising (A) a transition metal, (B) a monophosphine, and (C) a tetraphosphine having the structure described herein, the contacting conducted in one or more reaction zones and at hydroformylation conditions to produce a blend of normal (N) and iso (I) aldehydes at a N:I ratio, the method comprising at least one of increasing the N:I ratio by adding additional tetraphosphine to a reaction zone; decreasing the N:I ratio by adding additional monophosphine to a reaction zone; or increasing the N:I ratio by volatilization of the free monophosphine.