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Catalysts 2017, 7(6), 182; doi:10.3390/catal7060182

Insights into the Metal Salt Catalyzed 5-Ethoxymethylfurfural Synthesis from Carbohydrates

Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China
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Academic Editor: Christophe Len
Received: 26 April 2017 / Revised: 24 May 2017 / Accepted: 27 May 2017 / Published: 8 June 2017
(This article belongs to the Special Issue Catalysis of Biomass-Derived Molecules)
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Abstract

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 °C. Interestingly, CuSO4 and Fe2(SO4)3 were found to yield comparable EMF at lower temperature of 110 to 120 °C, and high yields of ethyl levulinate (65.4–71.8%) were obtained at 150 °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. View Full-Text
Keywords: carbohydrate; 5-ethoxymethylfurfural; catalytic conversion; metal salt; Lewis acid carbohydrate; 5-ethoxymethylfurfural; catalytic conversion; metal salt; Lewis acid
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Yu, X.; Gao, X.; Tao, R.; Peng, L. Insights into the Metal Salt Catalyzed 5-Ethoxymethylfurfural Synthesis from Carbohydrates. Catalysts 2017, 7, 182.

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