Highly selective conversion of glucose into furfural over modified zeolites

Catalytic insights into the production of biomass-derived side products methyl levulinate, furfural and humins

“…Even though furfural traditionally is derived from C5carbohydrates, recently its production from hexoses has also been attempted using microporous ion exchanged H-Beta zeolites [101] (Table 5). A synergistic effect of textural properties (i.e.…”

Hierarchically constructed NiO with improved performance for catalytic transfer hydrogenation of biomass-derived aldehydes

“…Considerable attention is nowadays directed towards the development of renewable feedstock from biomass resources that can serve as substitutes for limited fossil-based resources for the production of bio-fuels and fine chemicals [1][2][3]. Furfural (FF), the acid-hydrolysis product of biomass-derived C5-based carbohydrates, is recognized as one of the most promising feedstock in the manufacture of a broad spectrum of fuels and valuable chemicals via upgrading strategies such as, e.g., hydrogenation, hydrogenolysis and aldolization [4][5][6]. Furfuryl alcohol (FAOL), as a typical representative reduction derivative of FF, can serve as a versatile precursor in the synthesis of synthetic fibers, resins, adhesives and vitamin C [7][8][9][10], and act as an intermediate linking C5-carbohydrates to the down-stream products of bio-based furan derivatives (e.g., levulinic acid and γ-valerolactone) (Scheme 1) [11,12].…”

Catalytic Upgrading of Biomass‐Derived Sugars with Acidic Nanoporous Materials: Structural Role in Carbon‐Chain Length Variation

“…Among the examined zeolites, H‐Beta offered the best catalytic performance for the synthesis of furfural from hexoses at 150 °C, 1 h, and 2 MPa N 2 , giving 63.5 and 56.5 % furfural yield from fructose and glucose, respectively. A possible reaction pathway for the conversion of glucose/fructose into furfural is proposed in Scheme : cyclic glucose was first converted into acyclic glucose, then isomerized to acyclic fructose with the subsequent retro‐aldol reaction of acyclic fructose to acyclic arabinose, and finally converted into cyclic arabinose followed by the dehydration of cyclic arabinose into furfural . The proposed reaction pathway was confirmed by isotopic tracer experiments and quantum chemical calculations .…”

“…The proposed reaction pathway was confirmed by isotopic tracer experiments and quantum chemical calculations . Sn‐Beta was found to be a more efficient catalyst for the transformation of glucose into furfural, relative to commercial H‐Beta, giving 69.2 % furfural yield in a mixture of GVL and water (1.6 g GVL+10 wt % H 2 O) at 180 °C for 33 min . The excellent catalytic performance of Sn‐Beta was attributed to the cooperative effect of its unique pore structure and adequate acidic properties.…”