Catalytic Transformation of Lignocellulosic Biomass into Arenes, 5-Hydroxymethylfurfural, and Furfural

ChemSusChem
Tianye GuoYanqin Wang

Abstract

The complete transformation of lignocellulosic biomass into valuable platform chemicals is of great significance. Herein, a catalytic process for the upgrading of lignocellulose to arenes, 5-hydroxymethylfurfural (HMF), and furfural is reported. Firstly, the lignin fraction in lignocellulosic biomass is selectively converted into lignin oil (82.9 mol % yield of lignin monomers from birch wood) over a Pd/C catalyst and then further hydrodeoxygenated to arenes in catalytic hydrogen-transfer reactions over a Ru/Nb2 O5 catalyst. High yields of C7 -C9 hydrocarbons (95.6 mol %) with 85.6 wt % selectivity to arenes based on lignin oil are achieved owing to the synergistic effect between Ru and Nb2 O5 , which enables direct hydrogenolysis of the Caromatic -OH bond in phenolics. Secondly, the cellulose and hemicellulose fractions in the Pd/C-containing solid residue, as well as methylated C5 sugars produced during the stripping of lignin, are converted into HMF and furfural with a total yield of up to 24.5 wt % (based on the amount of birch wood) in a THF/concentrated seawater (ca. 30 wt % salts) biphasic reaction system. Here, seawater played a key role in the conversion of cellulose and hemicellulose into HMF and furfural, respectivel...Continue Reading

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Citations

Mar 13, 2019·Angewandte Chemie·Jingru ZhangShengzhong Frank Liu
Jun 24, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tamás I KorányiKatalin Barta
Dec 11, 2019·Advanced Materials·Min Wang, Feng Wang

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