VERFAHREN ZUR HERSTELLUNG VON HÖHEREN OXO- ALKOHOLEN AUS OLEFINGEMISCHEN DURCH ZWEISTUFIGE HYDROFORMYLIERUNG

摘要

Production of higher oxo-alcohols from 5-24C olefins comprises a two step hydroformylation reaction in the presence of a cobalt or rhodium catalyst. A process for the production of higher oxo-alcohols from mixtures of 5-24C olefins by a two step hydroformylation reaction in the presence of a cobalt or rhodium catalyst at elevated temperature and pressure is claimed. The reaction mixture from the first hydroformylation step is selectively hydrogenated and the hydrogenated mixture separated by distillation into crude alcohol and low boiling point material, predominantly comprising olefins, that is passed to the second hydroformylation step. The reaction mixture from the second hydroformylation step is again selectively hydrogenated and the mixture separated by distillation to crude alcohol and low boiling point material. The crude alcohol is distilled to yield a pure alcohol and at least a portion of the low boiling point material is removed as a saturated hydrocarbon.