An improved catalytic system for the reduction of levulinic acid to γ-valerolactone

Tukacs, József M.; Novák, Martin; Dibó, Gábor; Mika, László T.

doi:10.1039/c4cy00719k

Cited by 75 publications

(46 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among the platform molecules levulinic acid could play a key role in the chain [43], since it is the raw material of a proposed platform chemical (gamma-valerolactone) that can be obtained by its selective hydrogenation [44][45][46][47][48]. Extending the queue a new product, biopolymer generation was established by Tanamool [49] at laboratory scale.…”

Section: Introductionmentioning

confidence: 99%

Chemical-free Processing of Sweet Sorghum Juice of Cultivar Sucrosorgho 506

Cséfalvay

Bakacsi

2018

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

The development of sweet sorghum syrup producing technology for the juice of cultivar Sucrosorgho 506 was completed. The applicability of different existing syrup production technologies including sugar beet-based sugar production technology, and sugar cane processing technology was also tested. The new chemical-free syrup production technology was realized at laboratory-scale and large laboratory-scale. The proposed technology offers a chemical free separation and concentration of carbohydrates, and consists of centrifugal separation; ultrafiltration extended with an approved sterilization followed by nanofiltration to separate carbohydrates and inorganics, and finally a vacuum evaporation to reach syrup state. By using this technology the initial glucose:fructose:sucrose ratio could be preserved in the syrup, therefore not limiting its further use. The possible food application was established by sensory analysis. It was revealed that the syrup produced via the developed process obtained the most attractive character that enables the opportunity to use as natural sweetener.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical-free Processing of Sweet Sorghum Juice of Cultivar Sucrosorgho 506

Cséfalvay

Bakacsi

2018

Period. Polytech. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…GVL can also be produced directly from C 6 sugars using an acid catalyst (trifluoroacetic acid) in combination with a heterogeneous hydrogenation catalyst (Ru/C) without isolation of LA . The utilization of recyclable Ru‐based catalysts for solvent‐free homogeneous catalytic hydrogenation of LA to GVL, and the energy efficient continuous production of GVL from LA using a heterogeneous continuous‐flow reactor equipped with 5 % Ru/C is reported . Furthermore, the aqueous phase catalytic hydrogenation of LA to produce GVL by homogeneous Ru complexes is also reported in the literature .…”

Section: Methodsmentioning

confidence: 99%

Recyclable Earth‐Abundant Metal Nanoparticle Catalysts for Selective Transfer Hydrogenation of Levulinic Acid to Produce γ‐Valerolactone

Gowda

Chen

2016

ChemSusChem

View full text Add to dashboard Cite

Nanoparticles (NPs) derived from earth-abundant metal(0) carbonyls catalyze conversion of bio-derived levulinic acid into γ-valerolactone in up to 93% isolated yield. This sustainable and green route uses non-precious metal catalysts and can be performed in aqueous or ethanol solution without using hydrogen gas as the hydrogen source. Generation of metal NPs using microwave irradiation greatly enhances the rate of the conversion, enables the use of ethanol as both solvent and hydrogen source without forming the undesired ethyl levulinate, and affords recyclable polymer-stabilized NPs.

show abstract

“…[28][29][30][31] In early pioneering studies Osakada et al, [32] showed the activation of C-O bonds of five membered cyclic anhydride, aldehydic and keto acids using two different ruthenium ( [10] demonstrated the use of an in situ generated Ru catalyst using a combination of Ru(acac) 3 and the strongly electron donating phosphine P n Bu 3 in the presence of NH 4 PF 6 for LA hydrogenation to GVL ( [33] reported the effect of the mondentate and chelating phosphines: trioctylphosphine (P n Oct 3 ), 1,4-diphenylphosphinobutane (DPPB) and triphos ( fig. 2) and various acidic additives for the transformation of LA.…”

Section: Hydrogenation Of Levulinic Acid (La) To γ-Valerolactone (Gvl)mentioning

confidence: 99%

“…The activity of a range of bidentate diphosphine-Ru based catalysts, generated in situ form Ru(acac) 3 , for LA to GVL conversion has been investigated by the same group [30] (fig. 5) and compared to the sulfonated monodenate phosphine ligand Ru(acac) 3 / n Bu-DPPDS system.…”

Section: Hydrogenation Of Levulinic Acid (La) To γ-Valerolactone (Gvl)mentioning

confidence: 99%

Homogeneous Catalyzed Reactions of Levulinic Acid: To γ‐Valerolactone and Beyond

et al. 2016

View full text Add to dashboard Cite

Platform chemicals derived from lignocellulousic plant biomass are viewed as a sustainable replacement for crude oil based feed-stocks. Levulinic acid (LA) is one such biomass derived chemical that has been widely studied for further catalytic transformation to γ-valerolactone (GVL), an important 'green' fuel additive, solvent and fine chemical intermediate. Although the transformation of LA to GVL can be achieved using heterogeneous catalysis, homogeneous catalytic systems that operate under milder reactions, give high seletivities and can be recycled continue to attract much attention. A range of new homogeneous catalysts have now been demonstrated to efficiently convert LA to GVL, and to transform LA directly to other value added chemicals such as 1,4-pentanediol (1,4-PDO) and 2-methyltetrahydrofuran (2-MTHF). This mini review covers recent advances in the area of homogeneous catalysis for the conversion of levulinic acid and levulinic ester derivatives to GVL and chemicals beyond GVL.

show abstract

An improved catalytic system for the reduction of levulinic acid to γ-valerolactone

Abstract: An improved bidentate phosphine-modified Ru catalytic system was developed for the selective reduction of levulinic acid to γ-valerolactone.

Cited by 75 publications

References 28 publications

Chemical-free Processing of Sweet Sorghum Juice of Cultivar Sucrosorgho 506

Chemical-free Processing of Sweet Sorghum Juice of Cultivar Sucrosorgho 506

Recyclable Earth‐Abundant Metal Nanoparticle Catalysts for Selective Transfer Hydrogenation of Levulinic Acid to Produce γ‐Valerolactone

Homogeneous Catalyzed Reactions of Levulinic Acid: To γ‐Valerolactone and Beyond

Contact Info

Product

Resources

About