A1 Refereed original research article in a scientific journal
Citral-to-Menthol Transformations in a Continuous Reactor over Ni/Mesoporous Aluminosilicate Extrudates Containing a Sepiolite Clay Binder
Authors: Simakova Irina L., Vajglová Zuzana, Mäki-Arvela Päivi, Eränen Kari, Hupa Leena, Peurla Markus, Mäkilä Ermei M., Wärnå Johan, Murzin Dmitry Yu.
Publisher: AMER CHEMICAL SOC
Publication year: 2022
Journal: Organic Process Research and Development
Journal name in source: ORGANIC PROCESS RESEARCH & DEVELOPMENT
Journal acronym: ORG PROCESS RES DEV
Volume: 26
Issue: 2
First page : 387
Last page: 403
Number of pages: 17
ISSN: 1083-6160
DOI: https://doi.org/10.1021/acs.oprd.1c00435
Web address : https://pubs.acs.org/doi/10.1021/acs.oprd.1c00435
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/174842434
One-pot continuous synthesis of menthols from citral was performed over 5 wt % Ni supported on a mesoporous aluminosilicate catalyst with sepiolite as a binder at 70 degrees C with a selectivity of 75% to menthols. Catalyst deactivation with time-onstream resulted in a decrease of the conversion and selectivity to menthols at the expense of higher selectivity to isopulegols. Stereoselectivity to isopulegols and menthols only slightly changed with conversion and TOS. A kinetic model capable of describing experimental data for transformations of citral to menthol in a continuous mode was developed. It was based on a detailed reaction network and also comprised deactivation on both metal and acid sites. Numerical data fitting confirmed a good correspondence between the experimental data and calculations.
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