Process development and analyses for the co‐production of 2‐methyltetrahydrofuran and 1,4‐pentanediol from lignocellulosic biomass

GCB Bioenergy, Journal Year: 2023, Volume and Issue: 15(7), P. 900 - 915

Published: April 28, 2023

Abstract The development of technologies for utilizing biomass has attracted attention because can be produced sustainably worldwide. Biomass‐derived 2‐methyltetrahydrofuran (MTHF), which is a promising alternative to gasoline, great market potential and growing demand. However, in conventional conversion processes, the minimum selling price (MSP) biochemicals not economically acceptable. Co‐production increase economics utilization. Herein, we developed process co‐producing MTHF 1,4‐pentanediol (1,4‐PDO) from lignocellulosic biomass. After fractionation, cellulose hemicellulose were converted levulinic acid (LA), lignin was used heat electricity generation. LA then γ‐valerolactone (GVL). As platform material co‐production, GVL into 1,4‐PDO each subsystem. split ratio controlled efficiently produce according conditions. Additionally, performed techno‐economic life‐cycle assessment (TEA LCA, respectively) process. MSP calculated based on TEA results, environmental impacts quantitatively LCA results. We integration using pinch analysis reduced energy requirement proposed key cost drivers factors identified via sensitivity analyses. Consequently, during processing 2000 ton/day corn stover (raw lignocellulose), as $2.64/GGE (gasoline equivalent), representative such climate change fossil depletion −0.296 kg CO 2 eq − 0.056 oil eq, respectively. result, commercial production with sustainability. serve solution demand need more sustainable

Language: Английский

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Selective photocatalytic oxidation of furfural to C4 compounds with metal-TS-1 zeolite

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123220 - 123220

Published: Aug. 24, 2023

Language: Английский

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Covalent Adaptable Polymethacrylate Networks by Hydrazide Crosslinking Via Isosorbide Levulinate Side Groups

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(22), P. 8294 - 8307

Published: May 19, 2023

Reversible crosslinking offers an attractive strategy to modify and improve the properties of polymer materials while concurrently enabling a pathway for chemical recycling. This can, example, be achieved by incorporating ketone functionality into structure enable post-polymerization with dihydrazides. The resulting covalent adaptable network contains acylhydrazone bonds cleavable under acidic conditions, thereby providing reversibility. In present work, we regioselectively prepare novel isosorbide monomethacrylate pendant levulinoyl group via two-step biocatalytic synthesis. Subsequently, series copolymers different contents levulinic monomer methyl methacrylate are prepared radical polymerization. Using dihydrazides, these linear then crosslinked reaction groups in side chains. Compared prepolymers, networks exhibit enhanced glass transition temperatures thermal stability, up 170 286 °C, respectively. Moreover, dynamic efficiently selectively cleaved conditions retrieve polymethacrylates. We next show that recovered polymers can again adipic dihydrazide, thus demonstrating circularity materials. Consequently, envision isosorbide-based polymethacrylate have great potential field recyclable reusable biobased thermoset polymers.

Language: Английский

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Heterogeneous photocatalysis for biomass valorization to organic acids

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(24), P. 10338 - 10365

Published: Jan. 1, 2023

This review outlines recent progress in the photocatalytic conversion of biomass into organic acids with an emphasis on mechanisms involved and strategies for rational design/regulation systems to enhance performance.

Language: Английский

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A Review on Biodiesel Production, Analysis, and Emission Characteristics from Non‐Edible Feedstocks

ChemistrySelect, Journal Year: 2023, Volume and Issue: 8(31)

Published: Aug. 17, 2023

Abstract Biodiesel produced from different edible and non‐edible feedstocks is a viable alternative option for fueling combustion engine. However, the widespread use of sources biodiesel production may lead to food versus fuel controversy. Oil feedstock best possible solution problems that inhibits on commercial scale. This study presents potential production. Several aspects such as extraction technologies used extracting oil pathways are discussed. The quality should be assured before its commercialization by physical chemical characterization techniques used. In particular, emission comparison derived Based this study, have produce but still it has long way go. due in R&D phase needs more research eliminate additional treatment steps compared economic aspects. Furthermore, there been trade off properties biodiesels which must removed or evaluated pilot scale investigations commercialization.

Language: Английский

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Investigation of the Formation, Characterization, and Oxidative Catalytic Valorization of Humins

Materials, Journal Year: 2023, Volume and Issue: 16(7), P. 2864 - 2864

Published: April 4, 2023

The industrial use of biomass, e.g., for the production platform chemicals such as levulinic acid, became increasingly important in recent years. However, efficiency these processes was reduced by formation insoluble solid waste products called humins. Herein, humins from various carbohydrates investigated under different process conditions, order to obtain information about structure and mechanism. During this process, new potential structural fragments were identified. Subsequently, produced oxidatively converted low-molecular-weight carboxylic acids with polyoxometalate catalysts. experiments showed that sugars acetic acid ethanol only lead a small amount humins, which also structurally most suitable conversion acids. main oxidative valorisation formic CO2, respectively, our results indicate certain functional groups preferentially. These findings will help improve biomass enabling an overall more efficient thermo-sensitive feedstock carbohydrates.

Language: Английский

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Catalytic Conversion of Levulinic Acid into 2-Methyltetrahydrofuran: A Review

Molecules, Journal Year: 2024, Volume and Issue: 29(1), P. 242 - 242

Published: Jan. 2, 2024

Biomass-derived furanics play a pivotal role in chemical industries, with 2-methyltetrahydrofuran (2-MTHF), hydrogenated product of levulinic acid (LA), being particularly significant. 2-MTHF finds valuable applications the fuel, polymer, and sectors, serving as key component P-series biofuel acknowledged renewable solvent for various processes. Numerous research groups have explored catalytic systems to efficiently selectively convert LA 2-MTHF, using diverse metal-supported catalysts different solvents under batch or continuous process conditions. This comprehensive review delves into impact catalysts, encompassing co-metals co-catalysts, on synthesis from LA. The article also elucidates influence reaction parameters, such temperature, type quantity hydrogen source, time. Furthermore, provides insights mechanisms all documented systems.

Language: Английский

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Alkaline Modified Zr-loading on Nanosheet Zeolite Towards Production of γ-Valerolactone from Levulinic Acid Through Catalytic Transfer Hydrogenation

Applied Catalysis A General, Journal Year: 2024, Volume and Issue: 682, P. 119816 - 119816

Published: May 23, 2024

Language: Английский

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Effect of Phosphorus Precursor, Reduction Temperature, and Support on the Catalytic Properties of Nickel Phosphide Catalysts in Continuous-Flow Reductive Amination of Ethyl Levulinate

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(3), P. 1106 - 1106

Published: Jan. 20, 2022

Levulinic acid and its esters (e.g., ethyl levulinate, EL) are platform chemicals derived from biomass feedstocks that can be converted to a variety of valuable compounds. Reductive amination levulinates with primary amines H2 over heterogeneous catalysts is an attractive method for the synthesis N-alkyl-5-methyl-2-pyrrolidones, which environmentally friendly alternative common solvent N-methyl-2-pyrrolidone (NMP). In present work, catalytic properties different nickel phosphide supported on SiO2 Al2O3 were studied in reductive EL n-hexylamine N-hexyl-5-methyl-2-pyrrolidone (HMP) flow reactor. The influence phosphorus precursor, reduction temperature, reactant ratio, addition acidic diluters catalyst performance was investigated. Ni2P/SiO2 prepared using (NH4)2HPO4 reduced at 600 °C provides highest HMP yield, reaches 98%. Although presence sites sufficient hydrogenating ability important factors determining pyrrolidone selectivity also depends specific features adsorption active sites.

Language: Английский

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Ru‐Catalyzed Direct Asymmetric Reductive Amination of Bio‐Based Levulinic Acid and Ester for the Synthesis of Chiral Pyrrolidinone

ChemSusChem, Journal Year: 2023, Volume and Issue: 16(9)

Published: Feb. 8, 2023

Direct asymmetric reductive amination of bio-based levulinic acid (LA) to the enantioenriched 5-methylpyrrolidinone is achieved by using a readily available chiral Ru/bisphosphine catalyst with excellent enantioselectivity (up 96 % ee) and high isolated yield 89 %). Methyl levulinate (ML), byproduct from industrial production 2,5-furandicarboxylic (FDCA), can be used instead LA similar reactivity selectivity. Mass spectrometry isotope labelling studies indicate that lactam formed via imine-enamine tautomerization/cyclization followed hydrogenation cyclic enamide.

Language: Английский

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