Origin of the Excellent Performance of Ru on Nitrogen‐Doped Carbon Nanofibers for CO2 Hydrogenation to CH4

The financial support of European Commission (FREECATS project, FP7 Grant agreement no 280658), from Spanish Ministry MINECO and the European Regional Development Fund (project ENE2013-48816-C5-5-R), and Regional Government of Aragon (DGA-ESF-T66 Grupo Consolidado) are gratefully acknowledged.