ArticleACS omega2026
A Simple One-Pot Synthesis of a Sulfonated Carbon/Silica Composite Catalyst from Low Value Molasses for 5‑HMF Production.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Sulfonated silica-carbon composite catalysts (SSC) were synthesized from molasses and K60 silica gel in a one-pot method that simultaneously carbonized and sulfonated the composite. SSC prepared with 12 M sulfuric acid (SSC-12M) demonstrated a fructose to 5-hydroxymethylfurfural (5-HMF) conversion of 83.0% and a yield of 49.1% at 180 °C for 3 h in water. Silica was vital for enhancing the performance; sulfonated carbons with no silica led to lower yields and significant proportions of levulinic and formic acid byproducts. SSC-12 M demonstrated a 47.5% yield of 5-HMF after 3 cycles, while catalysts were easily regenerated via reflux in additional sulfuric acid. Solvent selection revealed that DMSO combined with SSC-12 M demonstrated a 98.2% conversion of fructose with a 62.7% 5-HMF yield (63.8% selectivity). However, the conversion of glucose to 5-HMF under identical conditions resulted in a 98.0% conversion and 70.2% yield (71.6% selectivity). SSC-12 M could lead to new opportunities in solid acid-catalyzed reactions.
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