Furfural degradation in a dilute acidic and saline solution in the presence of glucose

Danon, B.; Aa, L. van der; Jong, Wiebren de

doi:10.1016/j.carres.2013.04.030

Cited by 62 publications

(51 citation statements)

References 19 publications

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“…A previous study performed by Danon et al 41. has shown that the presence of D ‐glucose can promote the degradation rate of furfural if equivalent amounts of furfural and D ‐glucose (50 m M furfural/50 m m d ‐glucose) were reacted at temperatures between 160 and 200 °C using a mixture of 50 m M HCl/500 m M NaCl as the catalyst.…”

Section: Resultsmentioning

confidence: 58%

Conversion of Hemicellulose Sugars Catalyzed by Formic Acid: Kinetics of the Dehydration of D‐Xylose, L‐Arabinose, and D‐Glucose

et al. 2015

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The pre-treatment of lignocellulosic biomass produces a liquid stream of hemicellulose-based sugars, which can be further converted to high-value chemicals. Formosolv pulping and the Milox process use formic acid as the fractionating agent, which can be used as the catalyst for the valorisation of hemicellulose sugars to platform chemicals. The objective of this study was to investigate the reaction kinetics of major components in the hemicelluloses fraction of biomass, that is, D-xylose, L-arabinose and D-glucose. The kinetics experiments for each sugar were performed at temperatures between 130 and 170 °C in various formic acid concentrations (10-64 wt %). The implications of these kinetic models on the selectivity of each sugar to the desired products are discussed. The models were used to predict the reaction kinetics of solutions that resemble the liquid stream obtained from the fractionation process of biomass using formic acid.

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Section: Resultsmentioning

confidence: 58%

Conversion of Hemicellulose Sugars Catalyzed by Formic Acid: Kinetics of the Dehydration of D‐Xylose, L‐Arabinose, and D‐Glucose

et al. 2015

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“…Obviously, a quicker increase in furfural yield with the temperature rise at the beginning and the maximum furfural yield of 45.9% could be achieved after 2 h at 473 K. The conversion of xylose increased sharply as the temperature increased, from 37.0% to 99.6%. However, furfural yield and selectivity decreased when the temperature was over 473 K. This is probably due to the side reactions of degradation or condensation between furfural and reaction intermediates from xylose at high temperatures [11]. Moreover, furfural is highly unstable and degrades more quickly at high temperatures.…”

Section: Methodsmentioning

confidence: 99%

Furfural Formation from Corn Cobs in a One-Pot Method Catalyzed by ZSM-5

Gao¹,

Guan²,

Yu³

et al. 2015

Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015

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Abstract. This study designed a green one-pot method for furfural production from corn cobs that were heterogeneously catalyzed by recoverable solid-acid ZSM-5. The highest furfural yield of 78.5% was obtained under the following conditions: 473 K, 30% ZSM-5, 15 mL of toluene, and 500 mM of NaCl for 2 h. Catalyst recycling study showed that ZSM-5 could be repeatedly reused with high catalytic activity. The furfural yield was still up to 64.0% even when reused five times. The results showed that corn cobs are a suitable feedstock to produce furfural catalyzed by ZSM-5. This study not only provides basic data for the furaldehyde industry, but also offers an environmentally friendly way to make full use of crops.

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“…1 Schematic of the experimental setup L-arabinose, furfural and anhydrous oxalic acid, were obtained commercially, all with a 99 % purity (SigmaAldrich). Their concentrations in the experiments were selected to be in-line with previous studies [5,17,26,28] and indicate attractive economic potential [25]. The seawater was sampled from the North Sea near Scheveningen (The Netherlands) in June 2012.…”

Section: Methodsmentioning

confidence: 99%

“…4 [11,18,28,37,41]. Most studies use first-order kinetics for both the furfural degradation [5,15,22,26,33,37] and pentose dehydration reactions [6,9,28,38]. Moreover, the reaction scheme for arabinose dehydration is assumed to be analogous to that of xylose.…”

Section: Kineticsmentioning

confidence: 99%

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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Furfural degradation in a dilute acidic and saline solution in the presence of glucose

Cited by 62 publications

References 19 publications

Conversion of Hemicellulose Sugars Catalyzed by Formic Acid: Kinetics of the Dehydration of D‐Xylose, L‐Arabinose, and D‐Glucose

Conversion of Hemicellulose Sugars Catalyzed by Formic Acid: Kinetics of the Dehydration of D‐Xylose, L‐Arabinose, and D‐Glucose

Furfural Formation from Corn Cobs in a One-Pot Method Catalyzed by ZSM-5

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

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