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Sucrose Is a Promising Feedstock for the Synthesis of the Platform Chemical Hydroxymethylfurfural

Steinbach, David; Kruse, Andrea; Sauer, Jörg; Vetter, Philipp

Hydroxymethylfurfural (HMF) has an outstanding position among bio-based platform chemicals, because high-value polymer precursors and fuel additives can be derived from HMF. Unfortunately, the large-scale industrial production of HMF is not yet realized. An open research question is the choice of hexose feedstock material. In this study, we used the highly available disaccharide sucrose for HMF synthesis. The conversion of sucrose was catalyzed by sulfuric acid in water media. Experiments were conducted at temperatures of 180, 200, and 220 °C with reaction times of 2–24 min. A carbon balance showed that the yield of unwanted side products rose strongly with temperature. We also developed a kinetic model for the conversion of sucrose, involving nine first-order reactions, to uncover the kinetics of the main reaction pathways. Within this model, HMF is produced exclusively via the dehydration of fructose. Glucose isomerizes slowly to fructose. Side products arise simultaneously from glucose, fructose, and HMF. A pathway from hexoses to xylose via reverse aldol reaction was also included in the model. We believe that sucrose is the ideal feedstock for large-scale production of HMF because it is more abundant than fructose, and easier to process than sugars obtained from lignocellulosic biomass. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000081460
Veröffentlicht am 29.03.2018
DOI: 10.3390/en11030645
Zitationen: 30
Zitationen: 32
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2018
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000081460
HGF-Programm 35.13.01 (POF III, LK 01) Biomassen und Vorbehandlung
Erschienen in Energies
Verlag MDPI
Band 11
Heft 3
Seiten 645
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 14.03.2018
Schlagwörter kinetics; glucose; fructose; sugar dehydration; HMF; hydrothermal; hydrolysis; acid-catalysed
Nachgewiesen in Dimensions
Web of Science
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