Differential effects of mineral and organic acids on the kinetics of arabinose degradation under lignocellulose pretreatment conditions

Kootstra, A.M.J.; Mosier, Nathan S.; Scott, Elinor L.; Beeftink, H.H.; Sanders, J.P.M.

doi:10.1016/j.bej.2008.09.004

Cited by 102 publications

(59 citation statements)

References 34 publications

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“…However, the activation energy in water alone is close to that obtained in HCl (while the resulting reaction rates are the smallest). This can be explained by the fact that the degradation of furfural in water alone cannot be considered as an acid catalysed reaction, as pK w values are relatively low at high temperatures [19]. It was shown before that the furfural degradation rates (using HCl as the acidic catalyst) were lower when salts are present [17].…”

Section: Furfural Degradationmentioning

confidence: 94%

“…Moreover, it can be shown to result in even slightly higher furfural yield and selectivity than phosphoric acid and sulfuric acid [40]. In this context, it has been shown that the use of an organic acid, such as fumaric, maleic or formic acid, can effectively be used instead of mineral acids [12,19,40].…”

Section: Introductionmentioning

confidence: 99%

“…Different organic acid catalysts (e.g. fumaric, oxalic or maleic acid) have already been investigated as substitutes for the more widely applied mineral acids (mostly H 2 SO 4 or HCl) [19,29,33,34]. Formic acid, a byproduct of furfural degradation, has been shown to be an effective catalyst for furfural production [20].…”

Section: Introductionmentioning

confidence: 99%

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The effects of combined catalysis of oxalic acid and seawater on the kinetics of xylose and arabinose dehydration to furfural

Hongsiri

Danon

Jong

2014

Int J Energy Environ Eng

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It is known that both acids and salts have a positive catalytic effect on the dehydration of pentoses to form furfural, a potentially attractive platform chemical. In this study the effects of the combined usage of an organic acid, instead of stronger mineral acids, and a saline catalyst is investigated. In order to assess these effects, the kinetics of pentose dehydration to furfural are studied using oxalic acid as the primary catalyst and NaCl or seawater as the secondary saline catalyst. The interactions between these two types of catalysts are complex and are, therefore, also assessed thermodynamically. The addition of salts lowers the activity coefficient of the hydronium ions, but simultaneously favours the dissociation of the organic acid. It turned out that these two effects are of similar magnitude, resulting in a fairly constant hydronium ion activity. Because nonetheless higher furfural yields are obtained using the salts as a secondary catalyst, it is concluded that the salts influence the pentose dehydration mechanism directly. The final furfural yields obtained using oxalic acid as the primary catalyst were only slightly lower than those for similar experiments using HCl. The most distinctive difference between the two acids is the lower reaction rate (and thus longer reaction times) when using oxalic acid. Finally, it was observed that if no acidic catalyst is used, the salts tend to catalyse a loss reaction, which is suppressed when an acid is present.

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Section: Furfural Degradationmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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The effects of combined catalysis of oxalic acid and seawater on the kinetics of xylose and arabinose dehydration to furfural

Hongsiri

Danon

Jong

2014

Int J Energy Environ Eng

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“…Cellulose, with a highly organized crystalline fibrous structure consisting of linear homopolymers of glucose, can be hydrolyzed into polysaccharides and monosaccharides and then converted into equimolar amounts of LA and formic acid (FA) through the intermediate HMF (Van Dam et al 1986). Both of these reaction processes need acid as a catalyst, and numerous kinds of mineral acids, organic acids, solid acids, and heteropoly acids have been investigated in light of the need to obtain high yields of furfural and LA (Kootstra et al 2009;Gallo et al 2013). Ionic liquids as solvents (Aishah and Amin 2013) and chlorinated salts as additives (Shen et al 2014;Zhang et al 2014) have been used to enhance the hydrolysis product yields.…”

Section: Introductionmentioning

confidence: 99%

A Two-Step Conversion of Corn Stover into Furfural and Levulinic Acid in a Water/Gamma-Valerolactone System

Li¹,

Li²,

Liu³

et al. 2016

BioResources

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A two-step hydrolysis method was evaluated as a potential means of obtaining high yields of furfural and levulinic acid from corn stover using sulfuric acid as catalyst in a water/gamma-valerolactone (GVL) system. The corn stover underwent a high-temperature hydrolysis process to produce levulinic acid, followed by a low-temperature hydrolysis process to produce furfural. A series of experiments were conducted to explore the relationship between the different reaction parameters and the final yields of furfural and levulinic acid. Scanning electron microscopy (SEM) pictures together with X-ray diffraction (XRD) analysis were used to further elaborate on the hydrolysis results. Molar yields of about 70.65% furfural and 57.7% levulinic acid were obtained by applying this method with a low temperature of 140 °C and a high temperature of 190 °C, together with 0.2 M of sulfuric acid used as the catalyst. These results indicated that this was an effective way to obtain satisfactory yields of furfural and levulinic acid from corn stover.

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“…In the first generation biofuels, starch and sugar derived from sugar cane and maize are employed as feedstock, but contribution to the global energy supply is small. In the second generation bioethanol production, lignocellulose has the most important role and used, because lignocellulosic materials are cheap, abundant (1.5 × 10 10 tons/ year of biomass), and renewable [2,3]. Besides, lignocellulosic ethanol, has the potential to fill most global transportation fuel needs and does not present a conflict between energy demand and food supply [4,5].…”

Section: Introductionmentioning

confidence: 99%

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

Madadi¹,

Penga²,

Abbas³

2017

J Plant Biochem Physiol

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Lignocellulose biomass derived from plant cell walls is a rich source of biopolymers for the production of biofuels. Biomass recalcitrance is the noticeable and main features of lignocellulose which can reduces by genetic modification of plant cell wall. The aim of the present review is to provide the reader a new insight for enhancing biomass yield and biofuels production. This can be issued by focusing on major perennial grasses, cereal crops and woody feedstock which have high biomass yield or large biomass residues and also the effects of distinctive cell wall polymers (cellulose, hemicellulose, lignin, and pectin) on the enzymatic saccharification of biomass under different pretreatments. Moreover the present review paper will also major gene candidates which are involved plant cell wall biosynthesis, degradation and modification for improving biomass yield and digestibility in transgenic plants and genetic mutants.

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Differential effects of mineral and organic acids on the kinetics of arabinose degradation under lignocellulose pretreatment conditions

Cited by 102 publications

References 34 publications

The effects of combined catalysis of oxalic acid and seawater on the kinetics of xylose and arabinose dehydration to furfural

The effects of combined catalysis of oxalic acid and seawater on the kinetics of xylose and arabinose dehydration to furfural

A Two-Step Conversion of Corn Stover into Furfural and Levulinic Acid in a Water/Gamma-Valerolactone System

Advances in Genetic Manipulation of Lignocellulose to Reduce Biomass Recalcitrance and Enhance Biofuel Production in Bioenergy Crops

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