Abstract: Platinum nanoparticles supported on MgO, Al2O3, ZrO2, TiO2 were utilized for monoterpenoid oximes hydrogenation. Monocyclic menthone and carvone oximes synthesized from bio-derived monoterpenoids with a different structure were used to explore the effect of substrate structure on the reaction regularities. The oximes hydrogenation was carried out under hydrogen atmosphere at 100 degrees C using methanol as a solvent. Platinum catalysts were prepared by the impregnation methods. The catalysts were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray fluorescence spectroscopy, nitrogen physisorption. Hydrogenation of carvone oxime containing a conjugated oxime group and several reducible functional groups resulted in both hydrogenation and deoximation giving 5-isopropyl-2-methylcyclohexanamine and carvomenthone over Pt/Al2O3 and Pt/ZrO2 catalysts. Menthone oxime hydrogenation over Pt/Al2O3 catalysts with an average particle size of 0.8 nm provided the desired menthylamine formation with the selectivity of 90% at complete oxime conversion. Platinum catalysts based on MgO, ZrO2 and TiO2 enhanced menthone oxime deoximation to menthone.

Cite: Demidova Y.S. , Mozhaitsev E.S. , Munkuev A.A. , Suslov E.V. , Saraev A.A. , Volcho K.P. , Salakhutdinov N.F. , Simakova I.L. , Murzin D.Y.
Monoterpenoid Oximes Hydrogenation Over Platinum Catalysts
Topics in Catalysis. 2020. V.63. N1-2. P.187-195. DOI: 10.1007/s11244-020-01234-x WOS Scopus РИНЦ

Dates:

Published online:	Feb 13, 2020
Published print:	Mar 1, 2020

Identifiers:

Web of science	WOS:000516111600001
Scopus	2-s2.0-85079452538
Elibrary	43248955
OpenAlex	W3006137143

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