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Open AccessFeature PaperArticle

[email protected] BEA Zeolite Catalyst for MW-Assisted Alcohol Oxidation Reaction: A Greener Approach

1
Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
2
Área Departamental de Engenharia Química, Instituto Superior de Engenharia de Lisboa, IPL, 1959-007 Lisboa, Portugal
3
Centro de Química Estrutural and Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
*
Authors to whom correspondence should be addressed.
Catalysts 2020, 10(9), 1029; https://doi.org/10.3390/catal10091029
Received: 10 August 2020 / Revised: 22 August 2020 / Accepted: 2 September 2020 / Published: 8 September 2020
(This article belongs to the Special Issue Porous Materials and Catalysts)
The aim of this study was to investigate the catalytic activity of hybrid materials of iron supported on hierarchical zeolites in the oxidation reaction of 1-phenylethanol to acetophenone. A greener approach was considered for the preparation of the catalyst and performance of the oxidation reaction. Hierarchical BEA zeolite samples were obtained from an alkaline and a subsequent acid treatment. The materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and nitrogen adsorption at −196 °C. An iron salt was incorporated onto the hierarchical zeolites by mechanochemical grinding and the catalytic performance of the prepared materials was evaluated towards the microwave assisted oxidation reaction of 1-phenylethanol. The catalyst obtained by Fe immobilization on sample modified by 0.2 M NaOH followed by acid treatment ([email protected]) is the most promising material with 35% yield and 56% selectivity to acetophenone, allowing five reuse cycles without significant loss of activity and selectivity. View Full-Text
Keywords: hierarchical BEA zeolite; mechanochemical grinding; iron; microwave-assisted oxidation; heterogeneous catalysis; secondary alcohol hierarchical BEA zeolite; mechanochemical grinding; iron; microwave-assisted oxidation; heterogeneous catalysis; secondary alcohol
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Andrade, M.A.; Ansari, L.M.S.; Pombeiro, A.J.L.; Carvalho, A.P.; Martins, A.; Martins, L.M.D.R.S. [email protected] BEA Zeolite Catalyst for MW-Assisted Alcohol Oxidation Reaction: A Greener Approach. Catalysts 2020, 10, 1029.

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