A microwave-assisted process for the in-situ production of 5-hydroxymethylfurfural and furfural from lignocellulosic polysaccharides in a biphasic reaction system

Sweygers, Nick; Harrer, Johannes; Dewil, Raf; Appels, Lise

doi:10.1016/j.jclepro.2018.03.204

Cited by 77 publications

(64 citation statements)

References 42 publications

(38 reference statements)

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“…This value was comparable with the yields obtained in studies using mineral acids, such as HCl, at higher temperature ( % 180 8C). [15,39] The high furfural yield obtained was most probably related with the findings of Vigier and co-workers, [40] who demonstrated that in presence of [Ch]Cl the production of furfural is fostered by the formation of ac holine xyloside intermediate.…”

Section: Xylan Conversion Into Furfuralw Ith Conventional Heatingsupporting

confidence: 56%

“…Overall, under the best conditions, that is, a molar ratio of 1:3 of [Ch]Cl to MA, with 5 wt % water at 130 °C and 4 h of reaction time, a furfural yield of 44.87 % was achieved. This value was comparable with the yields obtained in studies using mineral acids, such as HCl, at higher temperature (≈180 °C) . The high furfural yield obtained was most probably related with the findings of Vigier and co‐workers, who demonstrated that in presence of [Ch]Cl the production of furfural is fostered by the formation of a choline xyloside intermediate.…”

Section: Resultsmentioning

confidence: 99%

“…In all the studied assays,t he powerp ulse was below 400 W, demonstrating the capability of the DES to absorb microwave radiation and to decrease the energy required for the reaction to occur.T he reported powerp ulse was also considerably lower than those describedp reviously with as ingle beam microwaver eactor. [15] Overall,t he bestr esults under microwave-assisted reaction conditions were achieved with a2 .5 min reaction time at 150 8C, leading to afurfural yield of 62.02 %.…”

Section: Xylan Conversion Into Furfural With Microwave Heatingmentioning

confidence: 86%

“…In these systems, furfural is produced in aqueous media and continuously extracted into the organic phase to which it has a higher affinity . Conventional solvents, such as methyl isobutyl ketone, tetrahydrofuran (THF), and cyclopentyl methyl ether have been used for this purpose. More recently, bio‐based solvents such as γ‐valerolactone (GVL) and 2‐MeTHF have been applied as greener alternatives.…”

Section: Introductionmentioning

confidence: 99%

“…In these systems, furfural is produced in aqueous media and continuously extracted into the organic phase to which it has a higher affinity. [14] Conventionals olvents, such as methyl isobutyl ketone, [15] tetrahydrofuran (THF), [16] andc yclopentyl methyl An efficient process for the production of furfural from xylan by using acidic deep eutectic solvents (DESs), which act both as solvents and catalysts, is developed. DESs composed of choliniumc hloride ([Ch]Cl) and malic acid or glycolic acid at differentm olar ratios, and the effects of water and g-valerolactone (GVL) contents, solid/liquid (S/L) ratio, andm icrowave heatinga re investigated.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Morais

Freire

et al. 2020

ChemSusChem

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An efficient process for the production of furfural from xylan by using acidic deep eutectic solvents (DESs), which act both as solvents and catalysts, is developed. DESs composed of cholinium chloride ([Ch]Cl) and malic acid or glycolic acid at different molar ratios, and the effects of water and γ‐valerolactone (GVL) contents, solid/liquid (S/L) ratio, and microwave heating are investigated. The best furfural yields are obtained with the DES [Ch]Cl:malic acid (1:3 molar ratio)+5 wt % water, under microwave heating for 2.5 min at 150 °C, a S/L ratio of 0.050, and GVL at a weight ratio of 2:1. Under these conditions, a remarkable furfural yield (75 %) is obtained. Direct distillation of furfural from the DES/GVL solvent and distillation from 2‐methyltetrahydrofuran (2‐MeTHF) after a back‐extraction step enable 89 % furfural recovery from 2‐MeTHF. This strategy allows recycling of the DES/GVL for at least three times with only small losses in furfural yield (>69 %). This is the fastest and highest‐yielding process reported for furfural production using bio‐based DESs as solvents and catalysts, paving the way for scale‐up of the process.

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Section: Xylan Conversion Into Furfuralw Ith Conventional Heatingsupporting

confidence: 56%

Section: Resultsmentioning

confidence: 99%

Section: Xylan Conversion Into Furfural With Microwave Heatingmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Morais

Freire

et al. 2020

ChemSusChem

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Carbon Materials as Phase‐Transfer Promoters for Obtaining 5‐Hydroxymethylfurfural from Cellulose in a Biphasic System

et al. 2019

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Different carbonaceous materials were tested as mass‐transfer promoters for increasing the yield of 5‐hydroxymethylfurfural (5‐HMF) in biphasic cellulose hydrolysis. The benefits of working with a biphasic system (water/methyl isobutyl ketone) under soft acid conditions were taken as starting point (no humins or levulinic acid production), with slow extraction kinetics as the weakest point of this approach. Carbon nanotubes (CNTs) and activated carbon (AC) were proposed to improve 5‐HMF liquid–liquid mass transfer. A kinetic analysis of the extraction process indicated the competition between 5‐HMF and glucose adsorption as the main cause of the poor results obtained with AC. In contrast, very promising results were obtained with CNTs, mainly at 1.5 wt % loading, with complete transfer of HMF and a high global mass‐transfer coefficient. The use of CNTs improved the amount of 5‐HMF in the organic phase by more than 270 %.

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One‐Pot Tandem Transformation of Inulin as Fructose‐Rich Platform Towards 5‐Hydroxymethylfurfural: Feedstock Advantages, Acid‐Site Regulation and Solvent Effects

Xiong

Lü

et al. 2023

ChemSusChem

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The valorization of non‐grain biomass feedstocks to value‐added chemicals, polymers and alternative fuels is a crucial route for the utilization of renewable resources. Inulin belongs to a type of fructans, which is a pivotal platform bridging upstream fructose‐rich biomass feedstocks typically represented by Jerusalem artichoke and downstream platform molecules such as alcohols, aldehydes and acids. Fructose can be directly obtained from the inulin hydrolysis and further converted into various platform chemicals, which is a more environmentally economical route than the conventional catalytic upgrading of cellulose. Nevertheless, most perspectives over the last decade have focused on the valorization of cellulose‐derived carbohydrates, without much emphasis on the practical importance of one‐pot transformation of inulin. In this review, we aim to demonstrate an efficient one‐pot tandem transformation system of the inulin as fructose‐rich platform towards 5‐hydroxymethylfurfural (HMF). Core concerns are placed on elucidating the contributing roles of acid sites and solvents in enhancing the overall catalytic performance. The perspectives presented in this review may contribute to the innovation in the catalytic refining of fructose‐rich non‐grain biomass and the development of a greener biomass‐based energy system.

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A microwave-assisted process for the in-situ production of 5-hydroxymethylfurfural and furfural from lignocellulosic polysaccharides in a biphasic reaction system

Cited by 77 publications

References 42 publications

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Enhanced Conversion of Xylan into Furfural using Acidic Deep Eutectic Solvents with Dual Solvent and Catalyst Behavior

Carbon Materials as Phase‐Transfer Promoters for Obtaining 5‐Hydroxymethylfurfural from Cellulose in a Biphasic System

One‐Pot Tandem Transformation of Inulin as Fructose‐Rich Platform Towards 5‐Hydroxymethylfurfural: Feedstock Advantages, Acid‐Site Regulation and Solvent Effects

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