Fig. 2: Catalyst structure and composition.
From: Selective hydrogenation via precise hydrogen bond interactions on catalytic scaffolds

a Solid-state 13C CP/MAS NMR of HCP-OH and HCP-CH3. Asterisks denote spinning sidebands. b FT-IR of the HCP-OH and HCP-CH3. c SEM images of HCP-OH. The green square is the FIB reconstruction area. d 3D reconstruction through SEM-FIB. e–h HADDF and TEM mapping of different elements of Ir-HCP-OH. i HR-TEM images of Ir particles.