PROCESS FOR PREPARING 3-METHYLBUT-1-ENE

摘要

The present invention relates to the preparation of 3-methylbut-1-ene from a hydrocarbon stream I comprising isobutene, wherein a hydrocarbon stream II which contains at least 70% by mass of isobutene in relation to the olefins present in the hydrocarbon stream and which has been obtained from hydrocarbon stream I or is identical to it is sent to a process step for hydroformylation, in which isobutene is hydroformylated in the presence of a rhodium catalyst, the aldehyde obtained from the hydroformylation of isobutene is hydrogenated to the corresponding alcohol, and 3-methylbut-1-ene is prepared from the alcohol by elimination of water.