CATALYST SYSTEMS BASED ON RHODIUM COMPLEXES CONTAINING DIPHOSPHINE LIGANDS AND THEIR USE IN THE PREPARATION OF ALDEHYDES

摘要

The invention relates to new catalyst systems based on water-insoluble rhodium complexes containing diphosphine ligands. The diphosphine ligands are in the form of ammonium carboxylates, sulfonates or phosphonates having a singly or multiply charged diphosphine anion and the corresponding number of ammonium cations as counter ions. The invention further relates to the use of the new catalyst systems in the preparation of aldehydes by reacting olefinically unsaturated compounds with hydrogen and carbon monoxide in a homogeneous phase.