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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

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

Texto completo
Autor(es):
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]
Número total de Autores: 7
Afiliação do(s) autor(es):
[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
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: MOLECULAR CATALYSIS; v. 462, p. 114-125, JAN 2019.
Citações Web of Science: 1
Resumo

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)

Processo FAPESP: 16/50322-2 - Materials with advanced technological and environmental applications
Beneficiário:Katia Jorge Ciuffi Pires
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/01501-1 - Catalisadores multifuncionais para processos oxidativos avançados empregando matrizes biogênicas ou argilas
Beneficiário:Katia Jorge Ciuffi Pires
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 12/08618-0 - Síntese e caracterização de zeólitas obtidas a partir de argilas naturais para adsorção de corantes
Beneficiário:Priscila Martins Pereira Rodarte
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 13/19523-3 - Materiais biohíbridos funcionais baseados em argilas lamelares e/ou fibrosas com aplicações multifacetadas
Beneficiário:Emerson Henrique de Faria
Linha de fomento: Auxílio à Pesquisa - Regular