Organic Carbonates: Efficient Extraction Solvents for the Synthesis of HMF in Aqueous Media with Cerium Phosphates as Catalysts

• DOI: 10.1002/cssc.201501181
• Publication Date: 2015-12-16T13:51:58Z
• Authors: Angela Dibenedetto; Michele Aresta; Luigi di Bitonto; Carlo Pastore
• Keywords: Formates; Liquid-Liquid Extraction; carbohydrates; Phosphate; Fructose; solvent effects; 01 natural sciences; Catalysis; Catalysi; Phosphates; Environmental Chemistry; biphasic catalysis; Chemical Engineering (all); Furaldehyde; Desiccation; biphasic catalysi; solvent effect; Molecular Structure; structure-activity relationship; structure-activity relationships; Water; Cerium; Formate; 0104 chemical sciences; cerium; Energy (all); carbohydrate; Solvent; Solvents; Materials Science (all)

Abstract We describe a process for the selective conversion of C 6 ‐polyols into 5‐hydroxymethylfurfural (5‐HMF) in biphasic systems organic carbonate/water (OC/W), with cerium(IV) phosphates as catalysts. Different reaction parameters such OC/W ratio, catalyst loading, time, and temperature, were investigated dehydration fructose. Under best conditions, yield 67.7 % selectivity 93.2 was achieved at 423 K after h using [(Ce(PO 4 ) 1.5 (H 2 O)(H 3 O) 0.5 )] catalyst. A maximum 70 same 12 h. At end reaction, removed by centrifugation, phase separated from water evaporated vacuo (with solvent recovery), solid 5‐HMF isolated (purity >99 %). The recovery reuse relationship between structure OC efficiency extraction are discussed. system influences lifetime catalysts positively compared to only water.