A method to determine the correct photocatalyst concentration for photooxidation reactions conducted in continuous flow reactors

Autor: Clemens R. Horn, Sylvain Gremetz
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 871-879 (2020)
Druh dokumentu: article
ISSN: 1860-5397
DOI: 10.3762/bjoc.16.78
Popis: When conducting a photooxidation reaction, the key question is what is the best amount of photocatalyst to be used in the reaction? This work demonstrates a fast and simple method to calculate a reliable concentration of the photocatalyst that will ensure an efficient reaction. The determination is based on shifting the calculation away from the concentration of the compound to be oxidized to utilizing the limitations on the total light dose that can be delivered to the catalyst. These limitations are defined by the photoflow setup, specifically the channel height and the emission peak of the light source. This method was tested and shown to work well for three catalysts with different absorption properties through using LEDs with emission maxima close to the absorption maximum of each catalyst.
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