Published January 1, 2017 | Version v1
Journal article Open

Tuning the Selectivity of Single-Site Supported Metal Catalysts with Ionic Liquids

  • 1. Univ Calif Davis, Dept Chem Engn, Davis, CA 95616 USA
  • 2. SLAC Natl Accelerator Lab, SSRL, Menlo Pk, CA 94025 USA

Description

1,3-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.

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