5-Hydroxymethylfurfural from fructose: an efficient continuous process in a water-dimethyl carbonate biphasic system with high yield product recovery

Abstract

Bio-based 5-hydroxymethylfurfural (5-HMF) and its derivatives have attracted enormous attention due to their valuable market potential. Production of pure 5-HMF is challenging owing to the high reactivity of its functional...

Photoelectrochemical Oxidation in Ambient Conditions Using Earth-Abundant Hematite Anode: A Green Route for the Synthesis of Biobased Polymer Building Blocks

“…Analytical-grade furan compounds FDCA, FFCA, DFF, and 5-HMF for use as HPLC standards (and in oxidation experiments in the case of FFCA and DFF), and the precursors (FeCl 3 , NaNO 3 , and NH 4 F) for the synthesis of hematite photoanode, were purchased from Sigma Aldrich( Stockholm, Sweden). For use in oxidation experiments, 5-HMF and HMFCA were synthesized and purified in our laboratory at high purity according to our previous study [30]. (2,2,6,6-Tetramethylpiperidin-1-yl)oxyl (TEMPO) and Trametes versicolor laccase (specific activity of 0.5 U/mg) were purchased from Sigma Aldrich.…”

“…Subsequently, we evaluated the PEC performance of the modified hematite photoelectrode for the oxidation of 5-HMF, which was produced from fructose, using the method adopted from our previous study [30]. Figure 2a shows the current potential curves recorded for 5-HMF oxidation at pH 12.5 in 1 M Na 2 SO 4 , and the corresponding chronoamperometry (CA) response (Figure 2b) recorded at 1.1 VRHE.…”

Sustainable biomass hydrodeoxygenation in biphasic systems

“…Recently, the production of 5-hydroxymethylfurfural (HMF) from fructose in a water/DMC biphasic system with HCl as catalyst was investigated, with 96.5% conversion of fructose and 87.2% yield of HMF. 78 Compared with solvent systems such as water/MIBK, water/1-butanol and water/2-propanol, this biphasic system exhibits strong HMF separation, high solubility as well as a considerable yield and selectivity. As a result, it enables efficient in situ separation and easy recovery of unconverted substrates and products.…”

Adsorption of 5-Hydroxymethylfurfural, Levulinic Acid, Formic Acid, and Glucose Using Polymeric Resins Modified with Different Functional Groups

“…22 Formic acid (FA) is a biomass-derived organic acid, and it can be used in leather, dye, medicine, and rubber industries for its low cost and abundant supply. 23 However, 5-HMF can be further rehydrated into byproducts under acidic conditions, such as LA, FA, and humins, 24,25 which results in great difficulty to separate and purify 5-HMF from such diluted and complex multicomponent systems. 26 In the last two decades, considerable efforts have been devoted to the selection and optimization of the catalyst systems to enhance C6 sugar conversion as well as 5-HMF yields.…”