Citral-to-Menthol Transformations in a Continuous Reactor over Ni/Mesoporous Aluminosilicate Extrudates Containing a Sepiolite Clay Binder
Mäki-Arvela Päivi; Wärnå Johan; Peurla Markus; Murzin Dmitry Yu.; Hupa Leena; Mäkilä Ermei M.; Vajglová Zuzana; Simakova Irina L.; Eränen Kari
Citral-to-Menthol Transformations in a Continuous Reactor over Ni/Mesoporous Aluminosilicate Extrudates Containing a Sepiolite Clay Binder
Mäki-Arvela Päivi
Wärnå Johan
Peurla Markus
Murzin Dmitry Yu.
Hupa Leena
Mäkilä Ermei M.
Vajglová Zuzana
Simakova Irina L.
Eränen Kari
AMER CHEMICAL SOC
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2022081154765
https://urn.fi/URN:NBN:fi-fe2022081154765
Tiivistelmä
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.
Kokoelmat
- Rinnakkaistallenteet [19207]