期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 4, 期 7, 页码 4050-4054出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b00996
关键词
Biorefineries; Cyclopentyl methyl ether; Enzyme-catalyzed esterification; 5-Hydroxymethylfurfural; Immobilized lipases; 2-Methyltetrahydrofuran; Platform chemicals
资金
- Natural Science Foundation of Guangdong Province [2014A030313263]
Valorization of biomass-based platform chemicals into high value-added products has attracted increasing attention recently. In this work, upgrading of 5-hydroxymethylfurfual (HMF) and levulinic acid, two important biomass-based platform chemicals, to HMF levulinate via a green and efficient enzymatic approach was reported. Novozym 435 was found to be the best biocatalyst for the enzymatic esterification. The enzymatic esterification progressed smoothly in t-butanol, 2-methy1-2-butanol, and cyclopentyl methyl ether as well as in the ecofriendly biomass-derived 2-methyltetrahydrofuran (2-MeTHF), while no enzymatic reaction occurred in deep eutectic solvents. When HMF concentration was up to 500 rnM, a good conversion of 72% was achieved in 2-MeTHF. The reaction temperature exerted a significant effect on the enzymatic esterification. When the reaction temperature is below 40 degrees C, high HMF conversions (>85%) were obtained. Besides, significant inactivation of the enzyme was observed at more than 50 degrees C, resulting in poor conversions.
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