Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48083
Título: | Highly efficient heterogeneous catalysts for phenol oxidation: Binuclear pyrrolyl-azine metal complexes encapsulated in NaY zeolite |
Autor(es): | Kuzniarska-Biernacka, Iwona Raposo, M. Manuela M. Batista, Rosa Parpot, Pier Biernacki, Krzysztof Magalhaes, Alexandre L. Fonseca, A. M. Neves, Isabel C. |
Palavras-chave: | NaY zeolite Pyrrolyl-azine derivatives Encapsulation Phenol oxidation DFT |
Data: | 2016 |
Editora: | Elsevier Science BV |
Revista: | Microporous and Mesoporous Materials |
Resumo(s): | Phenol was successfully oxidized by the heterogeneous catalysts based on iron(II) or copper(II) pyrrolylazine complexes encapsulated into NaY zeolite, under mild conditions. The heterogeneous catalysts were prepared using two different methods and characterized by different spectroscopic techniques and chemical analysis. The pyrrolyl-azine complexes are formed with a metal/ligand molar ratio of 2:1. Their structures were further confirmed by OFF calculations. The catalytic experimental conditions (e.g., amount of catalyst, presence or absence of the oxidant, PhOH:tBuOOH molar ratio) were optimized. The presence of the encapsulated metal pyrrolyl-azine complexes in NaY zeolite enhances higher conversion of phenol to catechol. The catalytic activities of the encapsulated metal complexes in NaY zeolite were compared with the homogeneous counterpart, and the catalysts were easily recovered and reused. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48083 |
DOI: | 10.1016/j.micromeso.2016.03.003 |
ISSN: | 1387-1811 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MMM 227 (2016) 272-280.pdf Acesso restrito! | 1,37 MB | Adobe PDF | Ver/Abrir |