Abstract
A novel method for the efficient production of furandicarboxylic acid from sugar diacids by acid-catalysed dehydration.
Highlights
The shift from fossil-based polymers to renewable plastics requires new efficient methods for the production of monomers from biomass. 2,5-Furandicarboxylic acid (FDCA) and its esters are promising bio-based substitutes for terephthalic acid in the production of polyesters.[1,2] Compared to fossilbased polyethylene terephthalate (PET), polyethylene furanoate (PEF) produced from FDCA has about 50% lower carbon footprint.[3]
We show over 80% yield of FDCA esters, which to our knowledge is the highest reported yield of FDCA starting from aldaric acid esters (Scheme 2)
Several families of solid acid catalysts were selected for the synthesis of furancarboxylates; acids supported on polymers, silica, alumina and zirconia were tested as well as acidic zeolites and clays
Summary
The shift from fossil-based polymers to renewable plastics requires new efficient methods for the production of monomers from biomass. 2,5-Furandicarboxylic acid (FDCA) and its esters are promising bio-based substitutes for terephthalic acid in the production of polyesters.[1,2] Compared to fossilbased polyethylene terephthalate (PET), polyethylene furanoate (PEF) produced from FDCA has about 50% lower carbon footprint.[3]. Au catalysts are highly selective in the oxidation of uronic acids to aldaric acids, giving up to quantitative yields under very mild conditions.[33,34,35,36] Galactaric acid can be produced directly from pectin without extensive purification using benign biotechnical means.[37,38,39,40] The main products are the esters of FDCA and FCA, with the selectivity depending on the substrate, catalyst type and reaction conditions.
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