Heteropolyacids supported on mesoporous AlSBA-15 as efficient catalysts for esterification of levulinic acid

Lucas, Nishita; Gurrala, Lakshmiprasad; Athawale, Anjali A.

doi:10.1007/s10934-019-00734-w

Cited by 24 publications

(11 citation statements)

References 37 publications

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“…66 Lucas et al studied the heteropolyacidsupported AlSBA-15 catalyst for the esterification of levulinic acid. 67 Pasha et al modified phosphotungstic acid using zirconium salt for the esterification of levulinic acid with ethanol. 68 55 Dharne and Bokade first optimized the DTPA loading on K10 by increasing the concentration from 0 to 30% (w/w).…”

Section: Heteropolyacid Catalystmentioning

confidence: 99%

“…A 90% conversion of levulinic acid was obtained for the carbon chain ranging from C 6 to C 10. 65 Luan et al synthesized ethyl levulinate using the catalyst QA 4 -STW.Optimized reaction conditions were mole ratio ethanol:levulinic acid 1:5, 4 mol% catalyst dosage and a reaction time of 4 h. 66 Lucas et al used a STA-AlSBA-15 catalyst to synthesize ethyl levulinate under the optimized conditions of a levulinic acid to ethanol mole ratio 1:10, 20 wt% catalyst, temperature 75 °C and reaction time 5 h. 67 Pasha et al used zirconium-exchanged phosphotungstic acid (ZrTPA) for the synthesis of ethyl levulinate using esterification of levulinic acid with ethanol. A 91% yield of ethyl levulinate was obtained under optimized reaction conditions of a mole ratio of levulinic acid to ethanol of 1:51, catalyst weight 0.05 g and reaction temperature 120 °C for a 2 h reaction time.…”

Section: Heteropolyacid Catalystmentioning

confidence: 99%

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A comparative study on the performance of acid catalysts in the synthesis of levulinate ester using biomass‐derived levulinic acid: a review

Gautam

Barman

Ali

2022

Biofuels Bioprod Bioref

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Non‐renewable resources have adverse effects on the environment, which result in global warming. Research has been shifted toward sustainable resources and lignocellulosic biomass is the best example of this. Lignocellulosic biomass is inexpensive, abundantly available and a rich source of carbon, which makes society less dependant on the use of fossil fuels. It is necessary for society to stop using petroleum‐based technologies and start developing more biomass‐based technologies. Lignocellulosic biomass can be converted into levulinic acid through various methods. Various value‐added chemicals are synthesized from levulinic acid, such as levulinate esters, acrylic acid, β‐acetyl acrylic acid, 1,4‐pentanediol, 2‐methyl tetrahydrofuran, γ‐valerolactone, etc. Among these, levulinate esters have received much attention owing to their broad applications as fuel additives, plasticizers and solvents in the pharmaceutical industries. Levulinate esters can be synthesized from the esterification reaction of levulinic acid and alcohol in the presence of either liquid or solid acid catalysts. Heterogeneous catalysts are favoured above homogeneous catalysts because of their properties, like being easy to separate, having good catalytic activity, being non‐corrosive to the reactor and having good recyclability. The performance of various heterogeneous catalysts such as zirconia, heteropolyacids, zeolite, carbonaceous material, resins and biocatalysts is reported in detail in the review. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd

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Section: Heteropolyacid Catalystmentioning

confidence: 99%

Section: Heteropolyacid Catalystmentioning

confidence: 99%

A comparative study on the performance of acid catalysts in the synthesis of levulinate ester using biomass‐derived levulinic acid: a review

Gautam

Barman

Ali

2022

Biofuels Bioprod Bioref

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“…A heteropolyacid (HPA) contains metal atoms such as W, Mo, and V, and p -block elements such as P, Si, etc. ; the oxygen atoms connecting the metal atoms and H + ions for charge balancing are generally used for recycling acidic catalysts for the synthesis of fine chemicals ( Yan et al, 2013 ; Wu et al, 2016a ; Wu et al, 2016b ; Wu et al, 2016c ; Zhou et al, 2016 ; Manikandan et al, 2017 ; Ramli et al, 2017 ; Zhang et al, 2017 ; Luan et al, 2018 ; Vilanculo et al, 2018 ; Lucas et al, 2019 ). Numerous structural analogs can be synthesized by either replacing the metal or nonmetal atoms.…”

Section: Sustainable Catalysts For Furan Derivativesmentioning

confidence: 99%

Development of Sustainable Catalytic Pathways for Furan Derivatives

Liu

Yang

et al. 2021

Front. Chem.

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Biomass, the only globally available, renewable feedstock of organic carbon, is considered a viable alternative to fossil fuels. It can be efficiently utilized to produce various building blocks in accordance with green and sustainable chemistry principles. In this review, recent progress, such as the transformation of carbohydrates (C5 or C6 sugar, inulin, and cellulose) and their derivatives (furfural, hydroxymethylfurfural) into significant platform chemicals over polyoxometalates, zeolites, non-noble metals, and ionic liquids in single or multiphase, is evaluated.

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“…The LA esterification reaction has been investigated using several solid acid catalysts toward the production of ALs in comparatively high yields (Pileidis and Titirici, 2016). Heteropolyacid (HPA) is a special species of acid composed of a combination of certain metals (tungsten, molybdenum, or vanadium) and p-block non-metals (silicon, phosphorus, or arsenic) with acidic hydrogen and oxygen atoms, which are generally applied as reusable acid catalysts for the preparation of fine chemicals (Yan et al, 2013;Wu et al, 2016a,b,c;Zhou et al, 2016;Manikandan and Cheralathan, 2017;Ramli et al, 2017a;Zheng et al, 2017;Luan et al, 2018;Vilanculo et al, 2018;Lucas et al, 2019). Numerous structural combinations can be prepared upon adjusting the metal and non-metal used.…”

Section: Heteropolyacid (Hpa) As Catalystsmentioning

confidence: 99%

Current Approaches to Alkyl Levulinates via Efficient Valorization of Biomass Derivatives

et al. 2020

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Biomass is a potential non-food, carbon-neutral, and abundant resource, which can be used as an alternative to fossil fuels during the sustainable preparation of various platform chemicals. Alkyl levulinates (ALs) have found widespread application as flavorings, plasticizing agents, and fuel additives, as well as synthetic precursors to various building blocks. Several processes have been investigated to transform biomass and its derivatives into ALs, which mainly include: (i) direct esterification of levulinic acid (LA) with alkyl alcohols and (ii) alcoholysis reactions of renewable biomass feedstocks and their derivatives, including furfuryl alcohol (FAL), chloromethyl furfural (CMF), and saccharides. This review focuses on illustrating the effects of the biomass pretreatment step, catalyst texture, possible mechanisms, acidities, and intermediates on the synthesis of ALs from sustainable resources covering a wide range of intermediates, including diethyl ether (DEE), 4,5,5-triethoxypentan-2-one (TEP), ethoxymethylfuran (EMF), ethyl-D-fructofuranoside (EDFF), and ethyl-D-glucopyranoside (EDGP).

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Heteropolyacids supported on mesoporous AlSBA-15 as efficient catalysts for esterification of levulinic acid

Cited by 24 publications

References 37 publications

A comparative study on the performance of acid catalysts in the synthesis of levulinate ester using biomass‐derived levulinic acid: a review

A comparative study on the performance of acid catalysts in the synthesis of levulinate ester using biomass‐derived levulinic acid: a review

Development of Sustainable Catalytic Pathways for Furan Derivatives

Current Approaches to Alkyl Levulinates via Efficient Valorization of Biomass Derivatives

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