Supported Poly(Ionic Liquid)-Heteropolyacid Based Materials for Heterogeneous Catalytic Fructose Dehydration in Aqueous Medium

Two sets of four different supported catalyst materials were prepared. One set was obtained by polymerization of a bis-vinylimidazolium salt, which formed a poly(ionic liquid) coating on SiO2, TiO2, boron nitride BN, and carbon nitride C3N4. The other set was, instead, obtained by immobilizing Keggi...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-07, Vol.27 (15), p.4722
Main Authors: García-López, Elisa I, Campisciano, Vincenzo, Giacalone, Francesco, Liotta, Leonarda Francesca, Marcì, Giuseppe
Format: Article
Language:English
Subjects:
Acidity
Acids
Aqueous solutions
Basicity
Boron
Boron nitride
Carbon
Carbon nitride
Catalysis
Catalysts
Catalytic activity
Catalytic converters
Dehydration
Fructose
Fructose - chemistry
fructose dehydration
Furaldehyde - chemistry
heteropolyacid
Humans
Hybrid materials
Hydration
Hydroxymethylfurfural
Ionic liquids
Ionic Liquids - chemistry
Ions
Morphology
Polymerization
Pore size
Silicon dioxide
Silicon Dioxide - chemistry
Thermogravimetric analysis
Titanium dioxide
Water - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two sets of four different supported catalyst materials were prepared. One set was obtained by polymerization of a bis-vinylimidazolium salt, which formed a poly(ionic liquid) coating on SiO2, TiO2, boron nitride BN, and carbon nitride C3N4. The other set was, instead, obtained by immobilizing Keggin heteropolyacid H3PW12O40 onto poly-imidazolium functionalized materials. All the catalysts, including the bare supports, were subjected to physical and chemical characterization by XRD, SEM, Specific Surface Area and pore size measurements, TGA, FTIR, and acidity-basicity measurements. The catalytic activity of the materials was tested versus the fructose dehydration in water solution at two different sugar initial concentrations (0.3 and 1 M). Tests lasted 3 h with an amount of catalyst of 2 g∙L−1. The presence of the poly-imidazolium on the surface of the supports increased the catalytic conversion of fructose to 5-hydroxymethylfurfural (the most abundant compound obtained) and was further improved by the contemporary presence of the heteropolyacid, at least for the highest initial fructose concentration. In the latter conditions, the highest yield of 5-hydroxymethylfurfural (>40%) was also obtained.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27154722