Glucose dehydration to 5-hydroxymethylfurfural on zirconium containing mesoporous MCM-41 silica catalysts

•Zirconium doped mesoporous MCM-41 silica is active in dehydration of glucose at 175°C.•The catalytic reaction is very selective to 5-hydroxymethylfurfural (HMF).•HMF is not rehydrated to produce levulinic acid.•The catalyst can be reutilized as least during three cycles. The selective dehydration o...

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Bibliographic Details
Published in:Fuel (Guildford) 2014-02, Vol.118, p.265-271
Main Authors: Jiménez-Morales, I., Santamaría-González, J., Jiménez-López, A., Maireles-Torres, P.
Format: Article
Language:English
Subjects:
5-Hydroxymethylfurfural
Activated
Applied sciences
Catalysis
Catalysts
Dehydration
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
Glucose
Glucose dehydration
Silicon dioxide
Sulphated zirconia
Synthesis
Zirconium
Zirconium doped MCM-41 silica
Zirconium sulphate
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Summary:•Zirconium doped mesoporous MCM-41 silica is active in dehydration of glucose at 175°C.•The catalytic reaction is very selective to 5-hydroxymethylfurfural (HMF).•HMF is not rehydrated to produce levulinic acid.•The catalyst can be reutilized as least during three cycles. The selective dehydration of glucose to hydroxymethylfurfural (HMF) in a biphasic medium (water/methylisobuthylketone) has been studied by using different catalysts based on mesoporous MCM-41 silica containing ZrO2. These catalysts have been: (a) MCM-41 silica doped with Zr in the synthesis step and activated at 550 and 750°C, (b) this solid impregnated with sulphuric acid and activated at 750°C, and (c) MCM-41 impregnated with zirconium sulphate and calcined at 750°C. All these catalysts exhibit acidic properties (282–563μmol of NH3 desorbed g−1) and high surface areas (359–635 m2g−1), being active in the dehydration of glucose to HMF at 175°C and 150min of reaction time. Catalysts are quite selective, since only fructose and HMF were detected, whereas levulinic acid was absent. The most active catalyst was obtained after incorporation of zirconium into a MCM-41 silica in the synthesis gel (Zr-MCM-550), achieving a HMF yield of 23%. Moreover, the activity of the spent catalyst is fully recovered after calcination at 500°C during 2h. TOF values of these catalysts vary between 1.3 and 1.8mmol of HMF g-1h-1, being the catalytic performance well correlated with the acidity and textural characteristics of catalysts.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2013.10.079