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

Ståhlberg, Tim; Fu, Wenjing; Woodley, John M.; Riisager, Anders

doi:10.1002/cssc.201000374

Cited by 249 publications

(133 citation statements)

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“…The use of acidic ionic liquids for the saccharification of cellulose and its subsequent conversion into important platform molecules like hydroxymethylfurfural, furfural, and levulinic acid has been well explored [97][98][99][100][101][102][103].…”

Section: As Acid Catalystsmentioning

confidence: 99%

Ionic Liquids: Synthesis and Applications in Catalysis

Rajni

2014

Advances in Chemistry

217

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Ionic liquids have emerged as an environmentally friendly alternative to the volatile organic solvents. Being designer solvents, they can be modulated to suit the reaction conditions, therefore earning the name "task specific ionic liquids. " Though primarily used as solvents, they are now finding applications in various fields like catalysis, electrochemistry, spectroscopy, and material science to mention a few. The present review is aimed at exploring the applications of ionic liquids in catalysis as acid, base, and organocatalysts and as soluble supports for catalysts.

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Section: As Acid Catalystsmentioning

confidence: 99%

Ionic Liquids: Synthesis and Applications in Catalysis

Rajni

2014

Advances in Chemistry

217

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“…However, when the reaction temperature was increased to 200 °C, the HMF yield dropped. It is well known that as the reaction temperature increased, the HMF yield decreases is due to the equilibrium shifts away from HMF formation and the low stability of HMF may suffer from condensation reactions (Ståhlberg et al 2011), thus considerably reducing the HMF yield. Figure 5 shows that the reaction time had great effect on the dehydration of glucose into HMF.…”

Section: Effect Of Volume Ratio Of Thf To H2omentioning

confidence: 99%

Catalysis of Glucose to 5-Hydroxymethylfurfural using Sn-Beta Zeolites and a Brønsted Acid in Biphasic Systems

Yang¹,

Wang²,

Lyu³

et al. 2015

BioResources

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Selective and efficient dehydration of glucose to 5-hydroxymethylfurfural (HMF) has been a widely explored concept recently, especially from the perspective of employing environmentally benign heterogeneous catalysts. However, there has been a relative paucity of data regarding the application of Sn-Beta zeolites, a category of catalysts that are very innocuous, inexpensive, and effective, toward evaluating bio-based conversions. Sn-Beta was shown to possess good Lewis acidity for catalyzing glucose isomerization to fructose in aqueous media at low pH and accelerating dehydration of glucose to HMF in a biphasic system with high yields. Sn-Beta zeolite with NH4F as the mineralizing agent (Sn-Beta-F) was a more effective catalyst for the selective dehydration of glucose to HMF. An optimal HMF yield of 53.0% was obtained over Sn-Beta-F zeolite in an acidic environment (pH 1) after 70 min at 190 °C. The reaction system was also effective for conversion of cellulose to HMF with a yield of 32.2% preliminarily.

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“…Dehydration of fructose was studied in imidazolium based ILs with acid and metal salts as catalyst (Stahlberg, Fu, Woodley, & Riisager, 2011). It was reported that ILs may stabilize HMF in the reaction mixture and increase its selectivity.…”

Section: Introductionmentioning

confidence: 99%