Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

Abstract

Recently, the highly efficient production of value-added biobased chemicals from available, inexpensive, and renewable biomass has gained more and more attention in a sustainable catalytic process. Furfural is a versatile biobased chemical, which has been widely used for making solvents, lubricants, inks, adhesives, antacids, polymers, plastics, fuels, fragrances, flavors, fungicides, fertilizers, nematicides, agrochemicals, and pharmaceuticals. In this work, ultrasonic-treated chestnut shell waste (UTS-CSW) was utilized as biobased support to prepare biomass-based heterogeneous catalyst (CSUTS-CSW) for transforming waste lignocellulosic materials into furfural. The pore and surface properties of CSUTS-CSW were characterized with BET, SEM, XRD, and FT-IR. In toluene–water (2:1, v:v; pH 1.0), CSUTS-CSW (3.6 wt%) converted corncob into furfural yield in the yield of 68.7% at 180 °C in 15 min. CSUTS-CSW had high activity and thermostability, which could be recycled and reused for seven batches. From first to seventh, the yields were obtained from 68.7 to 47.5%. Clearly, this biobased solid acid CSUTS-CSW could be used for the sustainable conversion of waste biomasses into furfural, which had potential application in future.

Dissolving Kraft Pulp Production and Xylooligosaccharide Coproduction: Effect of Pre-Hydrolysis Conditions

“…The presence of high quantities of furfural and hydroxymethylfurfural in the hydrolysates was also reported by several authors. − Furfural can be used to replace petrochemicals and as an intermediate for the production of resins and biofuel. , …”

“…Figure2is justifiable, i.e., a much higher conversion of xylose to furfural when the liquid temperature was increased from 148 to 158 °C.The presence of high quantities of furfural and hydroxymethylfurfural in the hydrolysates was also reported by several authors.34−36 Furfural can be used to replace petrochemicals and as an intermediate for the production of resins and biofuel 37,38. In this work, however, the focus is on xylooligosaccharides, high-value compounds with probiotic potential, which can be produced by xylan depolymerization.…”

“…34−36 Furfural can be used to replace petrochemicals and as an intermediate for the production of resins and biofuel. 37,38 In this work, however, the focus is on xylooligosaccharides, high-value compounds with probiotic potential, which can be produced by xylan depolymerization. In this section, all of the xylooligosaccharides and xylose were quantified as xylose, but in fact, most of them are oligosaccharides.…”

“… 34 − 36 Furfural can be used to replace petrochemicals and as an intermediate for the production of resins and biofuel. 37 , 38 …”

Efficient Synthesis of Biobased Furoic Acid from Corncob via Chemoenzymatic Approach

“…SO4 2− /SnO2-attapulgite, SO4 2− /SnO2-DM, and Cl0.3-S-R could be reused for five batches [14,33,34]. CSUTS-CSW was reused for seven batches [35]. The Sn-DAT-150 SS demonstrated high stability for the dehydration of xylose to furfural under the synthesis conditions tested.…”