High-efficient Aerobic Oxidation of Biomass-derived 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid over Holey 2D Mn2O3 Nanoflakes from a Mn-based MOF.

High-efficient Aerobic Oxidation of Biomass-derived 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid over Holey 2D Mn2O3 Nanoflakes from a Mn-based MOF. ChemSusChem. 2019 Nov 12;: Authors: Bao L, Sun FZ, Zhang GY, Hu TL Abstract The aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), a promising renewable polymer monomer to produce bio-based plastics such as polyethylene furanoate (PEF), has emerged as the subject of increasing interest recently. Here, holey 2D Mn2O3 nanoflakes have been obtained via a facile thermal treatment of a Mn-MOF precursor. The structural and morphological properties of the nanoflakes were characterized by PXRD, FTIR, SEM and TEM to explore the formation process. It was inferred that the linker loss in MOF precursor and the oxidation of manganese cation induced by the heat-treatment in air were responsible for the formation of holey 2D Mn2O3 nanoflakes. The specific morphology and redox cycle of manganese cation on the surface endowed the synthesized nanoflakes with promising performance on the selective oxidation. The obtained nanoflakes calcined at 400°C (M400) afforded over 99.5% yield of FDCA at complete conversion of HMF, which was much superior to the catalytic activity of commercial Mn2O3 and activated MnO2. To the best of our knowledge, it is a new record that Mn2O3 could exhibit such a high performance on the aerobic oxidation of HMF to FDCA. Based on the i...
Source: ChemSusChem - Category: Chemistry Authors: Tags: ChemSusChem Source Type: research