Development of a heterogeneous catalyst for lignocellulosic biomass conversion: Glucose dehydration by metal chlorides in a silica-supported ionic liquid layer

V. Degirmenci, E.J. Hensen

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

An attempt is made to immobilize the homogeneous metal chloride/EMIMCl catalyst for glucose dehydration to 5-hydroxymethylfurfural. To this end, ionic liquid fragments were grafted to the surface of SBA-15 to generate a heterogenized mimick of the homogeneous reaction medium. Despite a decrease in the surface area, the ordered mesoporous structure of SBA-15 was largely retained. Metal chlorides dispersed in such ionic liquid film are able to convert glucose to HMF with much higher yields as is possible in the aqueous phase. The reactivity order CrCl > AlCl > CuCl > FeCl is similar to the order in the ionic liquid solvent, yet the selectivity are lower. The HMF yield of the most promising CrCl-Im-SBA-15 can be improved by using a HO:DMSO mixture as the reaction medium and a 2-butanol/MIBK extraction layer. Different attempts to decrease metal chloride leaching by using different solvents are described. 
Original languageEnglish
Pages (from-to)657-662
JournalEnvironmental Progress and Sustainable Energy
Volume33
Issue number2
Early online date15 Apr 2013
DOIs
Publication statusPublished - 02 Sep 2014

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