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
HYDROFORMYLATION METHOD AND CATALYST USING RHODIUM-RUTHENIUM DUAL METAL AND TETRADENTATE PHOSPHINE LIGAND
申请人:Wuhan Catalys Technology CO., LTD
公开号:US20190337866A1
公开(公告)日:2019-11-07
A homogeneous catalytic reaction method and a catalyst for isomerization and hydroformylation of long-chain internal olefins are disclosed. A rhodium-ruthenium metal complex is used as a catalyst; and the ligands are tetradentate phosphine ligands. By means of the catalytic system, homogeneous internal olefin isomerization aid hydroformylation can be performed under a certain temperature and pressure to obtain aldehyde products having high normal to iso ratios. The present invention is applicable to not only long-chain internal olefins (≥C8) but also internal olefins having a carbon number less than 8.
Retaining Catalyst Performance at High Temperature: The Use of a Tetraphosphine Ligand in the Highly Regioselective Hydroformylation of Terminal Olefins
作者:Yongjun Yan、Xiaowei Zhang、Xumu Zhang
DOI:10.1002/adsc.200700017
日期:2007.7.2
A new tetraphosphineligand has been developed and applied in the highlyregioselectivehydroformylation of terminalolefins. The ligandretainshighperformance at hightemperature when compared with its bisphosphine analogue.
[EN] CATALYST COMPOSITION COMPRISING THE COMBINATION OF A MONOPHOPSPHINE, A TETRAPHOSPHINE LIGAND AND A HYDROFORMYLATION PROCESS USING IT<br/>[FR] COMPOSITION DE CATALYSEUR COMPRENANT LA COMBINAISON D'UNE MONOPHOPSPHINE, D'UN LIGAND DE TÉTRAPHOSPHINE ET PROCESSUS D'HYDROFORMYLATION L'UTILISANT
申请人:DOW TECHNOLOGY INVESTMENTS LLC
公开号:WO2019231613A1
公开(公告)日:2019-12-05
The present invention relates to catalyst compositions for hydroformylation processes and to hydroformylation processes utilizing certain catalysts. In one aspect, a catalyst composition for a hydroformylation process comprises (a) a transition metal; (b) a monophosphine; and (c) a tetraphosphine having the structure described herein, and wherein the composition comprises at least 40 moles of monophosphine per mole of transition metal.
[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.