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Issue 5, 2017
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Catalytic aerial oxidation of 5-hydroxymethyl-2-furfural to furan-2,5-dicarboxylic acid over Ni–Pd nanoparticles supported on Mg(OH)2 nanoflakes for the synthesis of furan diesters

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Abstract

Efficient catalytic aerial oxidation of biomass-derived 5-hydroxymethyl-2-furfural (5-HMF) to the industrially important furan-2,5-dicarboxylic acid (FDCA) was achieved over bimetallic M0.90–Pd0.10 (M = Ni, Co or Cu) alloy nanoparticles supported on in situ prepared Mg(OH)2 nanoflakes. In comparison to Co- and Cu-based bimetallic nanoparticles, Ni0.90Pd0.10/Mg(OH)2 exhibited superior catalytic performance. Catalytic reactions performed using Ni1−xPdx/Mg(OH)2 (x = 0.10 to 1) and a physical mixture of Ni/Mg(OH)2 and Pd/Mg(OH)2 revealed that the significant synergistic cooperation between Ni and Pd plays a crucial role in the observed high catalytic activity of Ni0.90Pd0.10/Mg(OH)2 for the oxidation of 5-HMF to FDCA. Experiments performed with Ni0.90Pd0.10 on different supports (SiO2, Al2O3, ZnO and Mg(OH)2) revealed that the basicity of the support is advantageous for efficient oxidation of 5-HMF, and it avoids the use of an external base additive. Moreover, the Ni0.90Pd0.10/Mg(OH)2 catalytic system can be scaled to gram-level oxidation of 5-HMF to FDCA. Subsequently, the synthesized FDCA was employed for the synthesis of various furan diesters (bis(2-hydroxyethyl), dimethyl, diethyl, dipropyl and dibutyl furan-2,5-dicarboxylate) as precursors for biomass-derived plastics. Moreover, structural and chemical identification of the highly active Ni0.90Pd0.10/Mg(OH)2 was established by P-XRD, SEM, TEM, EDS, elemental mapping and ICP-AES analysis.

Graphical abstract: Catalytic aerial oxidation of 5-hydroxymethyl-2-furfural to furan-2,5-dicarboxylic acid over Ni–Pd nanoparticles supported on Mg(OH)2 nanoflakes for the synthesis of furan diesters

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Supplementary files

Article information


Submitted
13 Jan 2017
Accepted
17 Mar 2017
First published
20 Mar 2017

Inorg. Chem. Front., 2017,4, 871-880
Article type
Research Article

Catalytic aerial oxidation of 5-hydroxymethyl-2-furfural to furan-2,5-dicarboxylic acid over Ni–Pd nanoparticles supported on Mg(OH)2 nanoflakes for the synthesis of furan diesters

K. Gupta, R. K. Rai and S. K. Singh, Inorg. Chem. Front., 2017, 4, 871
DOI: 10.1039/C7QI00026J

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