If you were unsure about the significance of research into new hydrogenation catalysts here is some more food for thought.
3 papers published ‘back to back’ in Science:
Nanoscale Fe2O3-Based Catalysts for Selective Hydrogenation of Nitroarenes to Anilines (Beller)
Cobalt Precursors for High-Throughput Discovery of Base Metal Asymmetric Alkene Hydrogenation Catalysts (Chirik)
Amine(imine)diphosphine Iron Catalysts for Asymmetric Transfer Hydrogenation of Ketones and Imines (Morris)
I won’t discuss the merits or otherwise of the papers, you can judge for yourselves, but this is indicative of the huge amount of research left to be done in this field and the significant impact it will continue to have for many, many years to come.