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- Title
Bimetallic-Organic Framework as a Zero-Leaching Catalyst in the Aerobic Oxidation of Cyclohexene.
- Authors
Liu, Ying‐Ya; Leus, Karen; Bogaerts, Thomas; Hemelsoet, Karen; Bruneel, Els; Van Speybroeck, Veronique; Van Der Voort, Pascal
- Abstract
A gallium 2,2′-bipyridine-5,5′-dicarboxylate metal-organic framework (MOF), denoted as COMOC-4, has been synthesized by solvothermal synthesis. This MOF exhibits the same topology as MOF-253. CuCl2 was incorporated into COMOC-4 by a post-synthetic modification (PSM). The spectroscopic absorption properties of the MOF framework before and after PSM were compared with theoretical data obtained by employing molecular dynamics combined with time-dependent DFT calculations on both the as-synthesized and functionalized linker. The catalytic behavior of the resulting Cu2+@COMOC-4 material was evaluated in the aerobic oxidation of cyclohexene with isobutyraldehyde as a co-oxidant. In addition, the catalytic performance of Cu2+@COMOC-4 was compared with that of the commercially available Cu-BTC (BTC=benzene-1,3,5-tricarboxylate) MOF. Cu2+@COMOC-4 exhibits a good cyclohexene conversion and an excellent selectivity towards cyclohexene oxide in comparison to the Cu-based reference catalyst. Furthermore, no leaching of the active Cu sites was observed during at least four consecutive runs.
- Subjects
BIMETALLIC catalysts; AB-initio calculations; OXIDATION; CYCLOHEXENE; EPOXIDATION; HETEROGENEOUS catalysis
- Publication
ChemCatChem, 2013, Vol 5, Issue 12, p3657
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201300529