title: Coupling of nanoporous chromium, aluminium-containing silicates with an ionic liquid for the transformation of glucose into 5-(hydroxymethyl)-2-furaldehyde.
abstract: Micro/mesoporous chromium, aluminium-containing silicates of the type TUD-1 (Al-TUD-1, Cr-TUD-1, CrAl-TUD-1) and zeolite BEA, Cr-BEA, and related composites BEA/TUD-1 and Cr-BEA/TUD-1, were prepared, characterised, and tested as solid acids coupled with the ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([bmim]Cl) as solvent, in the transformation of D-glucose into 5-(hydroxymethyl)-2-furaldehyde (Hmf), at 120 °C. The chromium-containing catalytic systems lead to considerably higher Hmf yields in comparison to the related systems without chromium. The IL is a favourable solvent for this target reaction (in terms of Hmf yields reached) compared to water or dimethylsulfoxide. A detailed study on the stabilities of the nanoporous solid acids in the IL medium is presented.
authors.affiliation: Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal. margarida.antunes@ua.pt
authors.forename: Margarida M
authors.initials: MM
authors.lastname: Antunes
authors.forename: Sérgio
authors.initials: S
authors.lastname: Lima
authors.forename: Martyn
authors.initials: M
authors.lastname: Pillinger
authors.forename: Anabela A
authors.initials: AA
authors.lastname: Valente
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D002384:Catalysis; D002857:Chromium / Q000737:chemistry*; D005662:Furaldehyde / Q000031:analogs & derivatives* / Q000737:chemistry; D005947:Glucose / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
chemical_list: D000538:Aluminum Silicates; D007093:Imidazoles; D052578:Ionic Liquids; D012997:Solvents; D002857:Chromium; C502841:1-butyl-3-methylimidazolium chloride; C008046:5-hydroxymethylfurfural; D005662:Furaldehyde; D005947:Glucose