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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Aminoiron(III)-porphyrin-alumina catalyst obtained by non-hydrolytic sol-gel process for heterogeneous oxidation of hydrocarbons

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Saltarelli, Michelle [1] ; de Faria, Emerson H. [1] ; Ciuffi, Katia J. [1] ; Nassar, Eduardo J. [1] ; Trujillano, Raquel [2] ; Rives, Vicente [2] ; Vicente, Miguel A. [2]
Total Authors: 7
[1] Univ Franca, Ave Dr Armando Salles Oliveira 201 Pq Univ, BR-14404600 Franca, SP - Brazil
[2] Univ Salamanca, Fac Ciencias Quim, Dept Quim Inorgan, GIR QUESCAT, E-37008 Salamanca - Spain
Total Affiliations: 2
Document type: Journal article
Source: MOLECULAR CATALYSIS; v. 462, p. 114-125, JAN 2019.
Web of Science Citations: 1

An aminoiron(III) porphyrin immobilized on an alumina matrix was prepared and used as catalyst for the oxidation of organic substrates. Powder alumina had been prepared by a non-hydrolytic sol-gel method through condensation of aluminum chloride with anhydrous ethanol. Then, iron(III) {[}5,10,15,20-tetrakis(2,6-dichloro-3-aminophenyl)-porphyrin] was immobilized on the alumina powder under magnetic stirring, reflux, and inert atmosphere. Ultraviolet-visible and infrared spectroscopies, powder X-ray diffraction, scanning electron microscopy and thermal analysis were applied for characterizing the resulting material, confirming that the ironporphyrin was immobilized on the alumina support. The catalytic activity of ironporphyrin/alumina was evaluated in the oxidation of (Z)-cyclooctene and cyclohexane and in the Baeyer-Villiger oxidation of cyclohexanone using iodosylbenzene or hydrogen peroxide as oxygen donors. The novel immobilized catalyst proved to be a promising system for the efficient and selective oxidation of the organic substrates with 85-92% selectivity to the epoxide in the oxidation of alkenes and 25-41% to the ketone in the oxidation of cyclohexane. As for the Baeyer-Villiger oxidation of cyclohexanone, good conversion to c-caprolactone was observed as well. The material is a reusable heterogeneous catalyst, which makes it more economically feasible than its homogeneous counterpart. (AU)

FAPESP's process: 16/01501-1 - Multifunctional catalysts for advanced oxidation processes employing biogenic matrices or clays
Grantee:Katia Jorge Ciuffi Pires
Support type: Regular Research Grants
FAPESP's process: 16/50322-2 - Materials with advanced technological and environmental applications
Grantee:Katia Jorge Ciuffi Pires
Support type: Regular Research Grants
FAPESP's process: 13/19523-3 - Functional Biohybrid materials based on layered and/or fibrous natural clays with multifaceted applications
Grantee:Emerson Henrique de Faria
Support type: Regular Research Grants
FAPESP's process: 12/08618-0 - Synthesis and characterization of zeolites obtained from natural clays for dye adsorption
Grantee:Priscila Martins Pereira Rodarte
Support type: Scholarships in Brazil - Scientific Initiation