An Efficient and Reusable Embedded Ru Catalyst for the Hydrogenolysis of Levulinic Acid to γ-Valerolactone.
Sign Up to like & getrecommendations! Published in 2017 at "ChemSusChem"
DOI: 10.1002/cssc.201601769
Abstract: To achieve a higher activity and reusability of a Ru-based catalyst, Ru nanoparticles were embedded in N-doped mesoporous carbon through a hard-template method. The catalyst showed excellent catalytic performance (314 h-1 turnover frequency) and recyclability (reusable… read more here.
Keywords: carbon; acid valerolactone; levulinic acid; catalyst ... See more keywords
A Multiphase Protocol for Selective Hydrogenation and Reductive Amination of Levulinic Acid with Integrated Catalyst Recovery.
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DOI: 10.1002/cssc.201900925
Abstract: At 60-150 °C and 15-35 bar H2 , two model reactions of levulinic acid (LA), hydrogenation and reductive amination with cyclohexylamine, were explored in a multiphase system composed of an aqueous solution of reactants, a hydrocarbon, and… read more here.
Keywords: levulinic acid; hydrogenation reductive; reductive amination; amination ... See more keywords
Transition-Metal-Free Valorization of Biomass-derived Levulinic Acid Derivatives: Synthesis of Curcumene and Xanthorrhizol.
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DOI: 10.1002/cssc.202002167
Abstract: Levulinic acid (LA) is acknowledged one of the most promising biomass-derived platform molecules, and can be transformed into various value-added chemicals. Here, we report a new reaction process for the valorization of levulinic acid derivatives under transition-metal free condition. The… read more here.
Keywords: transition metal; biomass derived; levulinic acid; acid derivatives ... See more keywords
A Comparative Study of Structurally Related Homogeneous Ruthenium and Iron Catalysts for the Hydrogenation of Levulinic Acid to γ‐Valerolactone
Sign Up to like & getrecommendations! Published in 2017 at "European Journal of Inorganic Chemistry"
DOI: 10.1002/ejic.201700938
Abstract: The conversion of levulinic acid to -valerolactone was investigated by employing the homogeneous Shvo catalyst (Ru-1) and iron Knolker-type catalysts, in order to evaluate the possibility to replace ruthenium with cheap, earth-abundant iron for this… read more here.
Keywords: ruthenium; iron; acid valerolactone; levulinic acid ... See more keywords
Thermodynamics of enzyme-catalyzed esterifications: II. Levulinic acid esterification with short-chain alcohols
Sign Up to like & getrecommendations! Published in 2017 at "Applied Microbiology and Biotechnology"
DOI: 10.1007/s00253-017-8481-4
Abstract: Levulinic acid was esterified with methanol, ethanol, and 1-butanol with the final goal to predict the maximum yield of these equilibrium-limited reactions as function of medium composition. In a first step, standard reaction data (standard… read more here.
Keywords: chain; thermodynamics; esterification; levulinic acid ... See more keywords
Production of Levulinic Acid via Cellulose Conversion Over Metal Oxide-Loaded MOF Catalysts in Aqueous Medium
Sign Up to like & getrecommendations! Published in 2019 at "Catalysis Letters"
DOI: 10.1007/s10562-019-03023-y
Abstract: Abstract In this study, Zr-MOF material (UiO-66) was modified with different metal oxides (CeO 2 , Ga 2 O 3 , and CoO) and employed in the conversion of cellulose to levulinic acid (LA) in… read more here.
Keywords: medium; conversion; metal oxide; metal ... See more keywords
Using MOF-808 as a Promising Support to Immobilize Ru for Selective Hydrogenation of Levulinic Acid to γ-Valerolactone
Sign Up to like & getrecommendations! Published in 2020 at "Catalysis Letters"
DOI: 10.1007/s10562-020-03277-x
Abstract: Abstract A stable Zr-based metal–organic framework (MOF), MOF-808, was used as a promising support to immobilize metallic Ru for the first time. The skeleton structure of MOF-808 can be well preserved during the immobilization process.… read more here.
Keywords: support immobilize; hydrogenation; acid valerolactone; levulinic acid ... See more keywords
Synthesis of biofuel via levulinic acid esterification over porous solid acid consisting of tungstophosphoric acid and reduced graphene oxide
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-017-3012-6
Abstract: Reduced graphene oxide (rGO) was synthesized by chemical reduction of graphene oxide with hydrazine hydrate and used as supports to prepare a series of H3PW12O40 (HPW)-based porous solid acids for the first time. Esterification of… read more here.
Keywords: graphene oxide; levulinic acid; reduced graphene; acid ... See more keywords
Kinetics and Modelling of Levulinic Acid Esterification in Batch and Continuous Reactors
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DOI: 10.1007/s11244-018-0998-y
Abstract: The ethyl ester of levulinic acid, ethyl levulinate is a completely bio-based chemical made from levulinic acid, which is a hydrolysis product of cellulose and bio-ethanol. The very precise kinetics of levulinic acid esterification with… read more here.
Keywords: kinetics modelling; levulinic acid; acid esterification; batch ... See more keywords
Kinetic Study of Levulinic Acid from Spirulina platensis Residue
Sign Up to like & getrecommendations! Published in 2022 at "Applied Biochemistry and Biotechnology"
DOI: 10.1007/s12010-022-03806-x
Abstract: Microalgae have the potential to emerge as renewable feedstocks to replace fossil resources in producing biofuels and chemicals. Levulinic acid is one of the most promising substances which may serve as chemical building blocks. This… read more here.
Keywords: levulinic acid; platensis residue; spirulina platensis; reaction ... See more keywords
H4SiW12O40-Catalyzed Levulinic Acid Esterification at Room Temperature for Production of Fuel Bioadditives
Sign Up to like & getrecommendations! Published in 2018 at "Waste and Biomass Valorization"
DOI: 10.1007/s12649-018-00549-x
Abstract: In this work, a route to synthesize bioadditives through H4SiW12O40-catalyzed levulinic acid esterification reactions with alcohols of short chain at room temperature was assessed. Among the Brønsted acids assessed (i.e., sulfuric, p-toluenesulfonic, silicotungstic, phosphomolybdic and… read more here.
Keywords: catalyzed levulinic; temperature; room temperature; levulinic acid ... See more keywords