Reductive Splitting of Cellulose in the Ionic Liquid 1‐Butyl‐3‐Methylimidazolium Chloride

Ignatyev, Igor A.; Doorslaer, Charlie Van; Mertens, Pascal; Binnemans, Koen; Vos, Dirk De

doi:10.1002/cssc.200900213

Cited by 64 publications

(35 citation statements)

References 64 publications

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“…In addition, direct one-pot synthesis of sorbitol (54 % yield) from pretreated cellulose was realized in the presence of Pt and H 2 via sequential reactions of saccharification followed by hydrogenation [Reaction (2)]. [30][31][32][33][34][35] (1)…”

Section: Resultsmentioning

confidence: 99%

Saccharification of Natural Lignocellulose Biomass and Polysaccharides by Highly Negatively Charged Heteropolyacids in Concentrated Aqueous Solution

Ogasawara¹,

Itagaki²,

Yamaguchi³

et al. 2011

ChemSusChem

125

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Highly negatively charged heteropolyacids (HPAs), in particular H5BW12O40, efficiently promoted saccharification of crystalline cellulose into water‐soluble saccharides in concentrated aqueous solutions (e.g., 82 % total yield and 77 % glucose yield, based on cellulose with a 0.7 M H5BW12O40 solution); the performance was much better than those of previously reported systems with commonly utilized mineral acids (e.g., H2SO4 and HCl) and HPAs (e.g., H3PW12O40 and H4SiW12O40). Besides crystalline cellulose, the present system was applicable to the selective transformation of cellobiose, starch, and xylan to the corresponding monosaccharides such as glucose and xylose. In addition, one‐pot synthesis of levulinic acid and sorbitol directly from cellulose was realized by using concentrated HPA solutions. The present system, concentrated aqueous solutions of highly negatively charged HPAs, was further applicable to saccharification of natural (non‐purified) lignocellulose biomass, such as “rice plant straw”, “oil palm empty fruit bunch (palm EFB) fiber”, and “Japanese cedar sawdust”, giving a mixture of the corresponding water‐soluble saccharides, such as glucose (main product), galactose, mannose, xylose, arabinose, and cellobiose, in high yields (≥77 % total yields of saccharides based on holocellulose). Separation of the saccharides and H5BW12O40 was easy, and the retrieved H5BW12O40 could repeatedly be used without appreciable loss of the high performance.

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Section: Resultsmentioning

confidence: 99%

Saccharification of Natural Lignocellulose Biomass and Polysaccharides by Highly Negatively Charged Heteropolyacids in Concentrated Aqueous Solution

Ogasawara¹,

Itagaki²,

Yamaguchi³

et al. 2011

ChemSusChem

125

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“…Adding a catalytic amount of trifluoroacetic acid to a solution of pine wood in [BMIm]Cl enabled complete hydrolysis of the carbohydrate fraction to water-soluble sugars at 120 8C, which is relatively mild. Efficient depolymerization has also been achieved with hydrogen gas together with ruthenium and platinum catalysts [70] and FeCl 2 in 1-(4-sulfonic acid)butyl-3-methylimidazolium hydrogensulfate. [71] The second prerequisite for achieving a successful reaction of starch or cellulose to form HMF is that the catalytic system can transform glucose into HMF.…”

Section: Glucosementioning

confidence: 96%

Synthesis of 5‐(Hydroxymethyl)furfural in Ionic Liquids: Paving the Way to Renewable Chemicals

et al. 2011

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The synthesis of 5-(hydroxymethyl)furfural (HMF) in ionic liquids is a field that has grown rapidly in recent years. Unique dissolving properties for crude biomass in combination with a high selectivity for HMF formation from hexose sugars make ionic liquids attractive reaction media for the production of chemicals from renewable resources. A wide range of new catalytic systems that are unique for the transformation of glucose and fructose to HMF in ionic liquids has been found. However, literature examples of scale-up and process development are still scarce, and future research needs to complement the new chemistry with studies on larger scales in order to find economically and environmentally feasible processes for HMF production in ionic liquids. This Minireview surveys important progress made in catalyst development for the synthesis of HMF in ionic liquids, and proposes future research directions in process technology.

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“…Many of the hydrolysis systems that have been used are those that we have discussed in Section 2 of this review and include mineral acid hydrolysis with H 2 SO 4 or H 3 PO 4 , 159 mechanocatalytic acid hydrolysis, 160 and ionic liquid hydrolysis. 161 However, bifunctional catalysts specifically designed for combined hydrolysis and hydrogenation have also been proposed. 162 Similar experiments using sulfuric acid and Ru/C have also been carried out with beech-extracted xylan to produce xylitol.…”

Section: Combined Depolymerisation and Hydrogenation To Polyolsmentioning

confidence: 99%

Targeted chemical upgrading of lignocellulosic biomass to platform molecules

2014

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This review presents an overview of the initial targeted chemical processing stages for conversion of lignocellulosic biomass to platform molecules that serve as intermediates for the production of carbonbased fuels and chemicals. We identify four classes of platform molecules that can be obtained in an initial chemical processing step: (i) sugars, (ii) dehydration products, (iii) polyols and (iv) lignin monomers. Special emphasis is placed on reporting and comparing parameters that affect process economics and/or sustainability, including product yields, amount of catalyst used, processing conditions, and product concentrations. We discuss the economic trade-offs associated with choices related to these parameters, depending on the product that is targeted. We also address the effects of real biomass on the ability to recover, recycle, and potentially regenerate catalysts and solvents used in the biomass conversion processes.

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Reductive Splitting of Cellulose in the Ionic Liquid 1‐Butyl‐3‐Methylimidazolium Chloride

Cited by 64 publications

References 64 publications

Saccharification of Natural Lignocellulose Biomass and Polysaccharides by Highly Negatively Charged Heteropolyacids in Concentrated Aqueous Solution

Saccharification of Natural Lignocellulose Biomass and Polysaccharides by Highly Negatively Charged Heteropolyacids in Concentrated Aqueous Solution

Synthesis of 5‐(Hydroxymethyl)furfural in Ionic Liquids: Paving the Way to Renewable Chemicals

Targeted chemical upgrading of lignocellulosic biomass to platform molecules

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