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Structural mimicking of inorganic catalyst supports with polydivinylbenzene to improve performance in the selective aerobic oxidation of ethanol and glycerol in water

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Richter,  Felix Herrmann
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Meng,  Yan
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Klasen,  Tim
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Sahraoui,  Laila
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Richter, F. H., Meng, Y., Klasen, T., Sahraoui, L., & Schüth, F. (2013). Structural mimicking of inorganic catalyst supports with polydivinylbenzene to improve performance in the selective aerobic oxidation of ethanol and glycerol in water. Journal of Catalysis, 308, 341-351. doi:10.1016/j.jcat.2013.08.014.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-C90C-3
Abstract
Many forms of polymers have been prepared and studied as polymeric catalyst support for metal nanoparticles and solid acid catalysts. The nanocasted mesoporous polydivinylbenzene (PDVB)-supported platinum catalysts presented here are distinguished by their customized mesoporosity and bulk morphology that are comparable to typical carbon- and alumina-supported powdered catalysts. Platinum nanoparticles are deposited on PDVB at loadings between 1 wt% and 9 wt% and a mean size between 2.7 nm and 6.2 nm, dependent on the synthesis method. Bifunctional catalysts containing platinum and acidic functionality are prepared by gas-phase sulfonation of the Pt/PDVB catalysts. The PDVB-supported catalysts are active for the oxidation of ethanol with molecular oxygen in water with up to 94% yield of acetic acid. In the analogous oxidation of glycerol, up to 60% yield of glyceric acid is reached with the bifunctional catalyst, and the polymer-supported catalysts feature lower formation of unidentified side products than Pt/C and Pt/Al2O3. Altogether, we find the polymers to be more active than the alumina and more selective than the carbon supports and thus overall have optimized performance.