A1 Refereed original research article in a scientific journal
One-Pot Synthesis of Menthol Starting from Citral over Ni Supported on Attapulgite-H-Beta-38 Extrudates in a Continuous Flow: Effect of Metal Location
Authors: Simakova Irina L, Mäki-Arvela Päivi, Martinez-Klimov Mark, Muller Joseph, Vajglova Zuzana, Peurla Markus, Eränen Kari, Murzin Dmitry Yu
Publisher: AMER CHEMICAL SOC
Publication year: 2022
Journal: Industrial and Engineering Chemistry Research
Journal name in source: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Journal acronym: IND ENG CHEM RES
Volume: 61
First page : 12998
Last page: 13010
Number of pages: 13
ISSN: 0888-5885
DOI: https://doi.org/10.1021/acs.iecr.2c02345
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/176478276
The one-pot synthesis of menthol from citral in a continuous mode was investigated over three different types of extrudates, namely Ni supported on H-Beta-38 and extruded with attapulgite, Ni supported on attapulgite and extruded with H-Beta 38, and the extrudates, which were shaped after deposition of Ni on both H-Beta-38 and attapulgite in the powder form. These composite catalysts were characterized by X-ray diffraction, transmission and scanning electron microscopy, temperature-programmed reduction of H-2, mechanical strength, and pyridine adsorption desorption. These three types of extrudates exhibited different metal particle sizes and acidity. The most promising catalyst in the one-pot menthol synthesis was Ni supported first on H-Beta-38 and then extruded with attapulgite giving a 45% yield of menthols in a trickle bed reactor. This catalyst exhibited 10 nm nickel particles and a rather high amount of strong Bronsted acid sites.
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