1. Center for Atomic-Scale Materials Physics (CAMP), Department of Physics, Building 307, Technical University of Denmark, DK-2800 Lyngby, Denmark, Amminex A/S, Kemitorvet, Building 206, DK-2800 Lyngby, Denmark, and Center for Sustainable and Green Chemistry, Department of Chemistry, Building 206, Technical University of Denmark, DK-2800 Lyngby, Denmark