Method for the preparation of alcohols from alkenes by means of hydroformylation and hydrogenation

摘要

Preparation of 7-25C aliphatic alcohol (I) comprises hydroformylating 6-24C olefin using cobalt-catalyst; treating hydroformylated mixture with oxygen-containing gases in the presence of acid, aqueous cobalt (II) salt solution; separating the obtained mixture in cobalt salts containing aqueous phase and an aliphatic aldehyde containing an organic phase; and hydrogenating the aldehyde containing organic phase. Preparation of 7-25C aliphatic alcohol (I) comprises hydroformylating 6-24C olefin using cobalt-catalyst; treating hydroformylated mixture with oxygen-containing gases in the presence of acid, aqueous cobalt (II) salt solution; separating the obtained mixture in cobalt salts containing aqueous phase and an aliphatic aldehyde containing an organic phase; and hydrogenating the aldehyde containing organic phase, where: the separation of cobalt compound takes place using an adsorbent, before the hydrogenation step and all the steps are carried out at least once. An independent claim is also included for a 7-25C aldehyde exhibiting organic phase, which is obtained as intermediate product after the second separation step.