Method for the continuous production of aldehydes

Details Method for the continuous production of aldehydes Method for the continuous production of aldehydes

2004-10-14

2009-11-10

Shameem, Golam M. M. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C568S008000, C568S451000, C568S453000

Reexamination Certificate

active

07615645

ABSTRACT:
The invention relates to a method for the continuous production of aldehydes by the isomerising hydroformylation in a homogenous phase of olefin compositions by means of a synthesis gas, in the presence of a homogeneous rhodium catalyst that is complexed with an organophosphorus ligand containing oxygen atoms and/or nitrogen atoms and a free ligand. The production is carried out at high temperature and high pressure in a multi-stage reaction system consisting of at least two reaction zones. According to the method, the olefin composition is first reacted in a first reaction zone or a group of several first reaction zones at a total pressure of between 10 and 40 bar, using a synthesis gas with a CO/H2molar ratio of between 4:1 and 1:2 until a 40 to 95% conversion of the α-olefins is obtained.

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