Post-modified FAU zeolites as efficient catalysts for the synthesis of coumarins

[Display omitted] •Lignin has been used to introduce mesoporosity in FAU zeolites.•Micro- and mesoporous FAU zeolites have been prepared via hydrothermal and alkaline desilication.•Coumarins have been succesfully synthesized using H-FAU zeolites. Herein, the effect of various treatments subjected to...

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Bibliographic Details
Published in:Catalysis today 2021-05, Vol.367, p.111-116
Main Authors: Zaitceva, O., Louis, B., Beneteau, V., Pale, P., Shanmugam, S., Evstigneyev, E.I., Vasiliev, A.V.
Format: Article
Language:English
Subjects:
Biorefinery
Coumarins
Desilication
FAU
Lignin
Zeolite
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Summary:[Display omitted] •Lignin has been used to introduce mesoporosity in FAU zeolites.•Micro- and mesoporous FAU zeolites have been prepared via hydrothermal and alkaline desilication.•Coumarins have been succesfully synthesized using H-FAU zeolites. Herein, the effect of various treatments subjected to FAU zeolites to introduce mesoporosity has been examined on their efficiency as catalyst in the cyclisation of O-aryl 3-arylpropynoic acid ester to its corresponding coumarin. The addition of bio-sourced lignin residues in the alkaline desilication treatment induced the generation of supplementary mesoporosity, thus offering an optimal micro- and mesopores combination with respect to targeted activity and selectivity. The so-called bio-sourced secondary template (BSST) concept in the design of zeolite-based catalysts could be assessed. The use of renewable wood feedstocks can therefore be a valuable strategy for the zeolite post-modification, thus for the design of porous zeolite catalysts.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2020.06.081