4. Hydroformylation of other alkenes

Hydroformylation industrially concerns both ethylene and alkenes higher than C ₃ . The production capacities obtained with alkenes higher than C ₄ are shown in Table A [10] in .

Most of this production is carried out using cobalt catalysts, as already described for propene. Shell has developed a modified cobalt process for direct access to alcohols.

The use of rhodium in the presence of a ligand has been industrialized for the production of volatile aldehydes such as propanal and pentanal (Hoechst and UCC processes) and very recently for the production of heavier aldehydes from olefins with terminal double bonds (Kvaerner process).