Issue 4, 2023

Gas-phase oxidative dehydrogenation of long chain alkenols for the production of key fragrance ingredients: from Rosalva isomers to Costenal analogues

Abstract

The continuous-flow, gas-phase oxidative dehydrogenation (ODH) of an actual mixture of decen-1-ol isomers (“Isorosalva” alcohol) towards the corresponding mixture of aldehydes (“Costenal” analogues, valuable ingredients in perfumes formulation) is herein reported for the first time over noble metal-free catalysts. In particular, the optimisation of the reaction conditions over a copper ferrite (Cu/Fe/O), as well as dedicated characterizations and comparisons between the fresh, the post-reaction (reduced) and regenerated (re-oxidised) catalytic material, allowed us to underline the key role of well dispersed copper oxide over a Fe-enriched spinel in promoting the selective ODH of Isorosalva alcohol. The superior catalytic activity and selectivity of CuO/γ-Fe2O3 synthesized ad hoc were attributed to the very high dispersion of Cu over the support as well as to a cooperative effect between Cu and Fe species in promoting the redox cycle.

Graphical abstract: Gas-phase oxidative dehydrogenation of long chain alkenols for the production of key fragrance ingredients: from Rosalva isomers to Costenal analogues

Supplementary files

Article information

Article type
Paper
Submitted
22 10月 2022
Accepted
03 1月 2023
First published
04 1月 2023
This article is Open Access
Creative Commons BY-NC license

Catal. Sci. Technol., 2023,13, 1059-1073

Gas-phase oxidative dehydrogenation of long chain alkenols for the production of key fragrance ingredients: from Rosalva isomers to Costenal analogues

J. De Maron, T. Tabanelli, F. Ospitali, C. Lopez Cruz, P. Righi and F. Cavani, Catal. Sci. Technol., 2023, 13, 1059 DOI: 10.1039/D2CY01836E

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