Unprecedented Reversible Redox Process in the ZnMFI—H2 System Involving Formation of Stable Atomic Zn0

In its element: Zn2+ at the M7 site of MFI-type zeolites activates H2, via ZnH and OH species, and leads to Zn0 species. The Zn0 species returns to its original state, a Zn2+ ion, upon evacuation of the zeolite at 873 K (see picture). The formation of the Zn0 species is supported by DFT calculations.