Department of Chemical and Biological Engineering2024-11-0920172155-543510.1021/acscatal.7b024292-s2.0-85032624019http://dx.doi.org/10.1021/acscatal.7b02429https://hdl.handle.net/20.500.14288/110611,3-Dialkylimidazolium ionic liquid coatings act as electron donors, increasing the selectivity for partial hydrogenation of 1,3-butadiene catalyzed by iridium complexes supported on high-surface-area gamma-Al2O3. High-energy-resolution fluorescence detection X-ray absorption near-edge structure (HERFD XANES) measurements quantify the electron donation and are correlated with the catalytic activity and selectivity. The results demonstrate broad opportunities to tune electronic environments and catalytic properties of atomically dispersed supported metal catalysts.ChemistryPhysicalJournal Article412795700061Q1616