Abstract
A strategy for effectively immobilizing small-molecule ligands onto TiO2-supported Ru catalysts is described. The immobilization was based on a simple two-phase centrifugation technique and driven by the hydrophobic effect, likely leading to the formation of hydrophobic clusters of small-molecule ligands. By using this strategy, a library of ligands containing secondary or tertiary amine groups and hydrophobic chains were successfully immobilized onto TiO2-supported Ru catalysts. Of these ligands, ligands containing 2,2,6,6-tetramethyl-1-piperidine-N-oxyl (TEMPO) moieties significantly improved the selectivity for aldehyde at high conversion in aerobic oxidation of alcohols, resulting from the inhibition of auto-oxidation of aldehydes. This strategy can generate diversity in preparation of organic/inorganic hybrid catalysts.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 6421-6425 |
| Number of pages | 5 |
| Journal | ChemistrySelect |
| Volume | 3 |
| Issue number | 23 |
| DOIs | |
| State | Published - Jun 19 2018 |
| Externally published | Yes |
Bibliographical note
KAUST Repository Item: Exported on 2022-06-03Acknowledgements: This work was supported by the National Natural Science Foundation of China (No. 51573039). We thank Dr. Abdul-Hamid Emwas at KAUST Core Lab for EPR measurements and helpful discussion.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.