abstract |
The present invention relates to 1,4-butanediol (BDO) by hydrogenating 2-butyne-1,4-diol (BYD) or 4-hydroxybutanal (4-HBA) in the presence of a Raney-type catalyst. Wherein the catalyst has a porous foam structure with macroscopic pores having a size in the range of 100 to 5000 μm and a bulk density of up to 0.8 kg / L. |