Process for hydroformylating short-chain olefins using a heterogenized catalyst system without ionic liquid

Process for hydroformylating C2 to C5 olefins, wherein the hydroformylation comprises one or more hydroformylation steps, wherein

• in at least one hydroformylation step a feed mixture comprising the C2 to C5 olefins is subjected to a hydroformylation with synthesis gas in the presence of a catalyst system comprising a metal from group 8 or 9 of the Periodic Table of the Elements, at least one organic phosphorus-containing ligand and a stabilizer, in a reaction zone, wherein the feed mixture and the synthesis gas are passed over a support composed of a porous ceramic material on which the catalyst system is in heterogenized form,
• the catalyst system does not comprise any ionic liquid;
• and
• the support is a block of a ceramic material, to which a washcoat composed of the same or a different ceramic material with respect to the ceramic material of the support is applied.