Ru on Modified Carbon Submicrometric Spheres as Novel Catalysts for the Oxidative Cleavage of Oleic Acid with N‐Methylmorpholine‐N‐Oxide as Green Oxidizing Agent

Oxidative cleavage of unsaturated fatty acids involves the rupture of carbon‐carbon double bonds to produce carbonyl compounds of high added value. This reaction is mainly performed using homogenous catalysts which are pollutant and cannot be recovered while current heterogeneous catalysts display p...

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Bibliographic Details
Published in:ChemCatChem Vol. 14; no. 24
Main Authors: Gámez, Sebastián, Torre, Ernesto, M. Gaigneaux, Eric
Format: Journal Article
Language:English
Published: Weinheim Wiley Subscription Services, Inc 20.12.2022
Subjects:
Carbon
carbon particles
Carbonyl compounds
Carbonyls
Catalysts
Chemical bonds
Chemical synthesis
Cleavage
Fatty acids
heterogeneous catalysis
Oleic acid
Oxidation
oxidative cleavage
Oxidizing agents
Pollutants
polydopamine
Reagents
Room temperature
ISSN:1867-3880, 1867-3899
Online Access:Get full text
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Summary:Oxidative cleavage of unsaturated fatty acids involves the rupture of carbon‐carbon double bonds to produce carbonyl compounds of high added value. This reaction is mainly performed using homogenous catalysts which are pollutant and cannot be recovered while current heterogeneous catalysts display poor activity. To solve this issue, an active catalyst was prepared by impregnating Ru ions on carbon spheres synthesized by hydrothermal carbonization of a glucose solution. Carbon spheres were calcined under air atmosphere to create porosity and functionalized with polydopamine to improve their ability to complex Ru ions. The catalyst was fully characterized and completed the oxidative cleavage of oleic acid within 7 h of stirring at room temperature using NaIO4 as oxidizing agent. The addition of N‐methylmorpholine N‐oxide, a green oxidizing agent, allowed >99 % conversion in only 5 h. Therefore, it was possible to conceive an eco‐friendly carbon catalyst for the valorization of oleic acid under mild conditions. Carbon spheres were synthesized by hydrothermal carbonization of a glucose solution. This carbon support was calcined under air atmosphere to create porosity and functionalized with polydopamine (PDA) to improve their ability to complex Ru ions. The catalyst completed the oxidative cleavage of oleic acid within 7 h of stirring at room temperature with NaIO4 and N‐methyl morpholine as oxidizing agents.
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ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.202201134