Journal
CATALYSTS
Volume 7, Issue 6, Pages -Publisher
MDPI AG
DOI: 10.3390/catal7060182
Keywords
carbohydrate; 5-ethoxymethylfurfural; catalytic conversion; metal salt; Lewis acid
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Funding
- National Natural Science Foundation of China [21406099, 21566019]
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The use of common metal salts as catalysts for 5-ethoxymethylfurfural (EMF) synthesis from carbohydrate transformation was performed. Initial screening suggested AlCl3 as an efficient catalyst for EMF synthesis (45.0%) from fructose at 140 degrees C. Interestingly, CuSO4 and Fe-2(SO4)(3) were found to yield comparable EMF at lower temperature of 110 to 120 degrees C, and high yields of ethyl levulinate (65.4-71.8%) were obtained at 150 degrees C. However, these sulfate salts were inactive in EMF synthesis from glucose and the major product was ethyl glucoside with around 80% yield, whereas EMF of 15.2% yield could be produced from glucose using CrCl3. The conversion of sucrose followed the accumulation of the reaction pathways of fructose and glucose, and a moderate yield of EMF could be achieved.
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