Dehydration of xylose into furfural over micro-mesoporous sulfonic acid catalysts

Dias, Ana S.; Pillinger, Martyn; Valente, Anabela A.

doi:10.1016/j.jcat.2004.11.016

Cited by 323 publications

(216 citation statements)

References 23 publications

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“…298 The mechanism for formation of furfural from xylose appears to go through a 2,5-anhydride intermediate. 300 Furfural can also be produced from xylose using heterogeneous catalysts including MCM functionalized sulfonic acid catalysts, 302 heteropolyacids, 303 faujasite, and mordenite. 304 High yields of furfural, up to 75%, are obtained with heterogeneous catalysts in DMSO and toluene/water solvents; 302 however, the yield is significantly lower (less than 30%) when water is used as a solvent.…”

Section: Furfural Conversionmentioning

confidence: 99%

Synthesis of Transportation Fuels from Biomass: Chemistry, Catalysts, and Engineering

2006

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Section: Furfural Conversionmentioning

confidence: 99%

Synthesis of Transportation Fuels from Biomass: Chemistry, Catalysts, and Engineering

2006

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“…[67] It is anticipated that these results can be further improved by synthesizing new catalytic materials such as nanoporous MCM-based materials which contain sulfonic acid groups that promote dehydration of xylose to furfural at elevated temperatures. [71] Also, while various polysaccharides can be processed with the biphasic reactor approach using higher levels of DMSO, separation of HMF from DMSO in the organic phase still remains an issue. However, as demonstrated by the effect of PVP, we anticipate that DMSO can be grafted onto a hydrophilic polymer backbone or onto a catalyst surface to provide an environment conducive for selective dehydration of various sugars to furan compounds.…”

Section: Reviews 7176mentioning

confidence: 99%

Liquid‐Phase Catalytic Processing of Biomass‐Derived Oxygenated Hydrocarbons to Fuels and Chemicals

2007

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Biomass has the potential to serve as a sustainable source of energy and organic carbon for our industrialized society. The focus of this Review is to present an overview of chemical catalytic transformations of biomass‐derived oxygenated feedstocks (primarily sugars and sugar‐alcohols) in the liquid phase to value‐added chemicals and fuels, with specific examples emphasizing the development of catalytic processes based on an understanding of the fundamental reaction chemistry. The key reactions involved in the processing of biomass are hydrolysis, dehydration, isomerization, aldol condensation, reforming, hydrogenation, and oxidation. Further, it is discussed how ideas based on fundamental chemical and catalytic concepts lead to strategies for the control of reaction pathways and process conditions to produce H2/CO2 or H2/CO gas mixtures by aqueous‐phase reforming, to produce furan compounds by selective dehydration of carbohydrates, and to produce liquid alkanes by the combination of aldol condensation and dehydration/hydrogenation processes.

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“…The furan derivatives that dehydrated from xylose originated from further decomposition of hemicelluloses (Dias et al 2005). The further decomposition of cellulose and hemicelluloses may also have generated organic acids, such as acetic acid (Kabyemela et al 1999;Zou et al 2011).…”

Section: Gc-ms Analysismentioning

confidence: 99%

Microwave-assisted Liquefaction of Rape Straw for the Production of Bio-oils

et al. 2017

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The acid-catalyzed liquefaction of rape straw in methanol using microwave energy was examined. Conversion yield and energy consumption were evaluated to profile the microwave-assisted liquefaction process. Chemical components of the bio-oils from various liquefaction conditions were identified. A higher reaction temperature was found to be beneficial to obtain higher energy consumption efficiency as heated by microwaves. Fourier transform infrared spectroscopy of the bio-oils indicated that hydroxyl groups underwent oxidation with increasing liquefaction temperature and/or prolonged reaction time; methanol esterification of oxidation products was also observed during the liquefaction process. The GC-MS chromatograms indicated that the further decomposition of C5 and C6 sugars resulted in a remarkable reduction of hydroxyl group products and an apparent increase in levulinic ester; furan derivatives and succinic acid derivatives were increased as well. The chemical reactions in liquefaction for the production of bio-oils mainly included decomposition of hemicelluloses, cellulose, and lignin; the oxidation reactions of the hydroxyl groups and methanol esterification were also presented. Comprehensively, a high content of hydroxyl group products was obtained at a moderate liquefaction condition (140 °C/15 min), and a high yield of levulinic ester products was acquired in severe reaction conditions (180 °C/15 min), regardless of energy consumption efficiency.

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Dehydration of xylose into furfural over micro-mesoporous sulfonic acid catalysts

Cited by 323 publications

References 23 publications

Synthesis of Transportation Fuels from Biomass: Chemistry, Catalysts, and Engineering

Synthesis of Transportation Fuels from Biomass: Chemistry, Catalysts, and Engineering

Liquid‐Phase Catalytic Processing of Biomass‐Derived Oxygenated Hydrocarbons to Fuels and Chemicals

Microwave-assisted Liquefaction of Rape Straw for the Production of Bio-oils

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