Elucidating the promotional effect of a covalent triazine framework in aerobic oxidation
| Autor: | Jonas Everaert, Christian V. Stevens, Flore Vanden Bussche, Freddy Callens, Ying-Ya Liu, Pascal Van Der Voort, Pieter Tack, Francesco Muniz-Miranda, Veronique Van Speybroeck, Parviz Gohari Derakhshandeh, Henk Vrielinck, Karen Leus, Sara Abednatanzi, Maria Meledina, Laszlo Vincze |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
02 engineering and technology
010402 general chemistry Heterogeneous catalysis 01 natural sciences Catalysis Mechanistic studies chemistry.chemical_compound Bipyridine Synergistic catalysis Bimetallic strip General Environmental Science Triazine Chemistry Process Chemistry and Technology 021001 nanoscience & nanotechnology Combinatorial chemistry 0104 chemical sciences Covalent triazine frameworks Covalent bond Oxygen activation Synergistic effect Alcohol oxidation 0210 nano-technology |
| Popis: | Synergistic catalysis holds great promise to enhance the catalytic performance of heterogeneous catalysts suffering from sluggish reaction kinetics. Much effort has been dedicated to the development of bimetallic systems in which the two promoter elements display synergistic benefits compared to monometallic counterparts. However, the use of bimetallic catalysts inescapably raises the cost of preparation and environmental issues. This study discovers a synergistic effect when using a bipyridine covalent triazine framework (bipy-CTF) as support for an IrIII complex in the aerobic oxidation reaction. The detailed mechanistic study provides insights into the function of the bipy-CTF in this synergistic catalysis. The EPR and in-situ XANES analyses confirm the applicability of bipy-CTF to activate oxygen and alcohol, resulting in an enhancement of the performance of the IrIII complex to exceed the activity of the homogeneous counterpart. This is an unprecedented report on promoting the activity of a heterogeneous catalyst through its solid support. |
| Databáze: | OpenAIRE |
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