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Article Dans Une Revue ACS Sustainable Chemistry & Engineering Année : 2022

Hierarchical Beta Zeolites As Catalysts in α-Pinene Oxide Isomerization

Résumé

Hierarchical beta zeolites obtained in the concentrated reaction mixtures (H 2 O/Si = 2.5) and micromesoporous materials synthesized using a dual-template approach from a zeolite beta precursor were rigorously characterized and tested in a sustainable and environmentally friendly process of α-pinene oxide isomerization. The highest yield of trans-carveol (42%) with chemopreventive activity of mammary carcinogenesis was achieved over low crystalline micromesoporous materials characterized by well-developed mesoporosity, an increased fraction of weak-to-medium Brønsted acid sites and low Brønsted and Lewis acid sites (BAS/LAS) ratio. In turn, highly crystalline hierarchical beta zeolites with a lower mesopore volume and the mesopore surface area, stronger Brønsted acidity, and a higher BAS/LAS ratio favored the formation of campholenic aldehyde (31% yield). The mechanism of the desired product and byproducts formation was discussed and its feasibility was confirmed by kinetic modeling.
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Dates et versions

hal-03842719 , version 1 (07-11-2022)

Identifiants

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Roman Barakov, Nataliya Shcherban, Päivi Mäki-Arvela, Pavel Yaremov, Igor Bezverkhyy, et al.. Hierarchical Beta Zeolites As Catalysts in α-Pinene Oxide Isomerization. ACS Sustainable Chemistry & Engineering, 2022, 10 (20), pp.6642 - 6656. ⟨10.1021/acssuschemeng.2c00441⟩. ⟨hal-03842719⟩
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