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Catalytic Conversion of Fructose and 5‑Hydroxymethylfurfural into 2,5-Furandicarboxylic Acid over a Recyclable Fe3O4–CoOx Magnetite Nanocatalyst
journal contribution
posted on 2015-03-02, 00:00 authored by Shuguo Wang, Zehui Zhang, Bing LiuA nano-Fe3O4–CoOx catalyst
was prepared via a simple wet impregnation method.
The nano-Fe3O4–CoOx catalyst showed good catalytic performance for the conversion
of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid (FDCA)
with t-BuOOH as the oxidant. Several important reaction
parameters were explored, with the highest FDCA yield of 68.6% obtained
from HMF after 15 h at a reaction temperature of 80 °C. One-pot
conversion of fructose into FDCA was also successful via two steps.
Catalytic conversion of fructose over Fe3O4@SiO2–SO3H yielded 93.1% HMF, which was oxidized
in situ into FDCA with a yield of 59.8%. Furthermore, recycling of
nano-Fe3O4–CoOx was accomplished with the help of a magnetic field. Nano-Fe3O4–CoOx showed
high stability in the reaction process. The use of nonprecious metals
and no requirement of a base additive made this method much more economical
and environmentally friendly.