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Continuous Flow Photo-oxidations Using Supported Photocatalysts on Silica

Abstract : The immobilization of soluble photocatalysts, or photosensitizers, has the potential to reduce the environmental footprint as well as the costs associated with visible-light photochemical processes. We report here on the straightforward preparation of photocatalysts non-covalently supported on silica using electrostatic interactions and compare the activities of these new photocatalytic systems in the photo-oxidation of 1,5-dihydroxynaphthalene to juglone in batch and in a fixed-bed flow reactor. This study demonstrates that simple immobilization strategies can produce stable heterogeneous photocatalysts and provide promising processing options with an up to 24-fold improvement in productivity in flow relative to batch.
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https://hal-cnam.archives-ouvertes.fr/hal-03142080
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Submitted on : Friday, March 11, 2022 - 2:56:19 PM
Last modification on : Friday, August 5, 2022 - 2:54:01 PM

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Vincent Blanchard, Zakariae Asbai, Kevin Cottet, Guillaume Boissonnat, Marc Port, et al.. Continuous Flow Photo-oxidations Using Supported Photocatalysts on Silica. Organic Process Research and Development, American Chemical Society, 2020, 24 (5), pp.822-826. ⟨10.1021/acs.oprd.9b00420⟩. ⟨hal-03142080⟩

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