Catalytic performance and electrochemical behaviour of Metal–organic frameworks: MIL-101(Fe) versus NH2-MIL-101(Fe)

Porous Fe(III) terephthalate MOFs, MIL-101(Fe) and NH2-MIL-101(Fe), showed to be highly active and 100% selective heterogeneous catalysts in the ring opening of cyclohexene oxide. [Display omitted] The present research investigation brings out a novel and relevant catalytic application for the famil...

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Bibliographic Details
Published in:Polyhedron 2017-05, Vol.127 (C), p.464-470
Main Authors: Barbosa, André D.S., Julião, Diana, Fernandes, Diana M., Peixoto, Andreia F., Freire, Cristina, de Castro, Baltazar, Granadeiro, Carlos M., Balula, Salete S., Cunha-Silva, Luís
Format: Article
Language:English
Subjects:
Electrochemical studies
Heterogeneous catalysts
Metal–organic frameworks
Porous materials
Ring opening of epoxides
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Summary:Porous Fe(III) terephthalate MOFs, MIL-101(Fe) and NH2-MIL-101(Fe), showed to be highly active and 100% selective heterogeneous catalysts in the ring opening of cyclohexene oxide. [Display omitted] The present research investigation brings out a novel and relevant catalytic application for the family of MIL-101 metal–organic framework (MOF) materials. The porous Fe(III) terephthalate MOF, MIL-101(Fe) and the corresponding amino-functionalized material, NH2-MIL-101(Fe) showed to be highly active and 100% selective heterogeneous catalysts in the ring opening of cyclohexene oxide in the presence of aniline. The activity of both MOF materials was similar, mainly after 24h, achieving yields of 87% for trans-2-(phenylamino)-cyclohexanol. The stability and robustness of these MOF materials were confirmed and their capacity to be recycled was also demonstrated. Furthermore, cyclic voltammetry studies revealed that the amine-functionalization of the MIL-101(Fe) results in a significant improvement of the electrochemical response over the unfunctionalized compound, constituting an exceptional advantage of the NH2-MIL-101(Fe) as a future potential electrocatalyst.
ISSN:0277-5387
DOI:10.1016/j.poly.2016.10.032