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Glucose dehydration to 5-hydroxymethylfurfural in a biphasic system over solid acid foams
Vitaly V Ordomsky1, John van der Schaaf, Jaap C Schouten
1Laboratory of Chemical Reactor Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (The Netherlands), Fax: (+31) 40-2446653.
Chemsuschem
|April 26, 2013
Summary
Binderless zirconium phosphate (ZrPO) foam catalysts efficiently convert glucose to 5-hydroxymethylfurfural (HMF). Foam structure enhances selectivity and stability compared to bulk catalysts.
Area of Science:
- Materials Science
- Catalysis
- Chemical Engineering
Background:
- Developing efficient solid acid catalysts is crucial for biomass conversion.
- Zirconium phosphate (ZrPO) exhibits promising catalytic activity but often suffers from poor stability and selectivity.
- Foam-structured catalysts offer high surface area and improved mass transfer properties.
Purpose of the Study:
- To prepare and characterize a novel binderless zirconium phosphate (ZrPO) foam catalyst.
- To evaluate the catalytic performance of ZrPO foam in glucose dehydration to 5-hydroxymethylfurfural (HMF).
- To investigate the influence of catalyst structure and post-treatment on catalytic efficiency and selectivity.
Main Methods:
- Preparation of ZrPO coating on anodized aluminum foam via multiple washcoating.
- Characterization of catalyst properties, including the effects of ZrPO pretreatment, slurry concentration, and coating amount.
- Evaluation of catalytic performance in glucose dehydration using a biphasic reactor and a rotating foam reactor.
- Investigation of silylation treatment and methylisobutylketone addition for selectivity enhancement.
Main Results:
- The ZrPO foam catalyst demonstrated effective conversion of glucose to HMF.
- Silylation treatment improved selectivity by deactivating unselective Lewis acid sites.
- Addition of methylisobutylketone stabilized HMF selectivity and facilitated its extraction.
- The foam catalyst exhibited enhanced selectivity and resistance to deactivation compared to bulk ZrPO.
Conclusions:
- Binderless ZrPO foam catalysts are promising for efficient and selective HMF production from glucose.
- The foam architecture significantly improves catalytic performance and stability.
- Optimized pretreatment and post-treatment strategies further enhance the catalyst's utility.
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