Selective conversion of furfuryl alcohol to levulinic acid by SO3H-containing silica nanoflower in GVL/H2O system

Wang, Ruoqing; Shen, Feng; Tang, Yiwei; Guo, Haixin; Smith, Richard L.; Qi, Xinhua

doi:10.1016/j.renene.2021.02.064

Cited by 16 publications

(25 citation statements)

References 39 publications

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“…LA can be obtained through multi-step hydrolysis of six-carbon sugars such as cellulose, glucose or fructose in acidic aqueous solution, or through hydration and ring opening of biomass derived furfuryl alcohol (FOL). 13,14 Biomass conversion reactions in acidic aqueous solution oen face the problems of serious polymerization and low yields of target products. 15,16 In contrast, AL can be obtained by alcoholysis of sugars or FOL under acidic conditions with higher production efficiency and lower separation and purication cost.…”

Section: Introductionmentioning

confidence: 99%

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

Wang

Huang

Geng

et al. 2022

Sustainable Energy Fuels

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Section: Introductionmentioning

confidence: 99%

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

Wang

Huang

Geng

et al. 2022

Sustainable Energy Fuels

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“…Using carbohydrates or furfuryl alcohol as feedstock, a high yield of LA can be obtained using hydrolytic catalysts 5‐8 . However, carbohydrates and furfuryl alcohol can only be obtained after secondary processing, which makes them non‐ideal raw materials.…”

Section: Introductionmentioning

confidence: 99%

“…In this method, 3‐mercaptopropyltrimethoxysilane (MTPS) is first subjected to an inter‐hydroxyl dehydration reaction with the hydroxyl groups on the catalyst carrier. Thus SH can be loaded on the support and then SH is oxidized to SO 3 H by hydrogen peroxide to synthesize the B acid‐containing solid acid catalyst 8,28 . Several researchers have used this method to prepare sulfonated catalysts for biomass hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

“…4 Using carbohydrates or furfuryl alcohol as feedstock, a high yield of LA can be obtained using hydrolytic catalysts. [5][6][7][8] However, carbohydrates and furfuryl alcohol can only be obtained after secondary processing, which makes them non-ideal raw materials. On the other hand, cellulose in biomass can be converted to LA through the hydrolysis of cellulose to glucose, isomerization of glucose to fructose, dehydration of fructose to HMF and rehydration of HMF to LA.…”

Section: Introductionmentioning

confidence: 99%

“…Thus SH can be loaded on the support and then SH is oxidized to SO 3 H by hydrogen peroxide to synthesize the B acid-containing solid acid catalyst. 8,28 Several researchers have used this method to prepare sulfonated catalysts for biomass hydrolysis. Shen et al 29 used MTPS as a sulfonating agent in preparing catalysts for the efficient conversion of cellulose and other carbohydrates into LA in pure water with cellulase-mimetic solid acids.…”

Section: Introductionmentioning

confidence: 99%

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A bifunctional carbon catalyst with Cl and SO₃H groups for hydrolyzing furfural residue to levulinic acid

Zhang

Yan

Chen

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: Levulinic acid, an important platform compound, is extensively used in textiles, dyes, antifreeze, animal feed, solvents and food additives. However, the use of lignocellulosic biomass to produce levulinic acid is difficult because of poor accessibility to cellulose and low hydrolytic yield. Thus a viable hydrolysis strategy and a suitable catalyst must be developed.RESULTS: In this study, a bifunctional solid acid catalyst (HTC-SO 3 H) containing both cellulose binding sites ( Cl, COOH and OH) and catalytic sites ( SO 3 H) was prepared by a carbonization-grafting-oxidization method. X-ray photoelectron spectroscopy and Fourier transform infrared characterization confirmed the existence of Cl and the successful modification of the SO 3 H grafted hydrothermal carbon. The hydrogen bonds formed between cellulose and the binding sites ( Cl, OH and COOH) in the catalyst showed synergistic effects with the catalytic sites ( SO 3 H), leading to efficient hydrolysis of the furfural residue. A total of 74.81% (non-magnetic) and 70.18% (magnetic) levulinic acid yields were obtained after hydrolysis at 190 °C and 180 min in γ-valerolactone-H 2 O (1:1, v/v). Magnetic catalysts were synthesized using a co-precipitation method. Catalysts were recycled without any obvious reduction in catalytic activity. CONCLUSION: Using sucralose as a raw material, the as-synthesized bifunctional solid acid catalyst improved the accessibility to cellulose and increased levulinic acid yield. Moreover, the grafted SO 3 H formed by hydroxyl hydration condensation exhibited superior stability. This study provides a valuable strategy for the efficient hydrolysis of lignocellulosic biomass.

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Hydrolysis of Furfuryl Alcohol to Angelica Lactones and Levulinic Acid over Nb‐based Catalysts

et al. 2023

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Levulinic acid and angelica lactones are important building blocks obtained from hemicellulose. This process comprises multiple chemical reactions at which furfuryl alcohol is an intermediate, but only few studies have investigated its hydrolysis. This work studied the role played by the nature of acid sites and the impact of their strength and amount on furfuryl alcohol hydrolysis over Nb2O5 and NbOPO4. It was disclosed that production of levulinic acid is a two‐step cascade reaction at which angelica lactones are intermediates. These two hydrolysis steps were catalyzed by Brønsted acid sites with no contribution from Lewis centers. Brønsted acidity of Nb2O5 presented no activity while phosphate moieties on NbOPO4 were effective. Mixtures of organic solvent and water hindered side reactions, improving selectivity to valued bioproducts. 1,4‐dioxane was the most suitable organic solvent. This study shows that selectivity of 96 % of levulinic acid and angelica lactones can be accomplished over NbOPO4.

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Selective conversion of furfuryl alcohol to levulinic acid by SO3H-containing silica nanoflower in GVL/H2O system

Cited by 16 publications

References 39 publications

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

A bifunctional carbon catalyst with Cl and SO₃H groups for hydrolyzing furfural residue to levulinic acid

Hydrolysis of Furfuryl Alcohol to Angelica Lactones and Levulinic Acid over Nb‐based Catalysts

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Selective conversion of furfuryl alcohol to levulinic acid by SO3H-containing silica nanoflower in GVL/H2O system

Cited by 16 publications

References 39 publications

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

A bifunctional carbon catalyst with Cl and SO3H groups for hydrolyzing furfural residue to levulinic acid

Hydrolysis of Furfuryl Alcohol to Angelica Lactones and Levulinic Acid over Nb‐based Catalysts

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A bifunctional carbon catalyst with Cl and SO₃H groups for hydrolyzing furfural residue to levulinic acid