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Article

Transformation of Corn Stover into Furan Aldehydes by One-Pot Reaction with Acidic Lithium Bromide Solution

1
Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
2
Advanced Research Institute for Multidisciplinary Science, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
3
School of Bioengineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
4
State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2022, 23(23), 14901; https://doi.org/10.3390/ijms232314901
Submission received: 5 October 2022 / Revised: 21 November 2022 / Accepted: 24 November 2022 / Published: 28 November 2022
(This article belongs to the Special Issue Bio-Polymer Materials and Bio-Refinery)

Abstract

Currently, the production of furan aldehydes from raw biomass suffers from low furfural yield and high energy consumption. In this study, a recyclable and practical method was explored for the preparation of furfural from corn stover by the one-pot reaction by acidic lithium bromide solution (ALBS) without pretreatment and enzymolysis. In the ALBS reaction, the furan aldehydes were generated by the degradation of lignocellulose; however, the products were unstable and were further dehydrated to form humins. So, dehydration reaction was inhibited in this study, and the high yield of furan aldehydes was obtained, in which 2.94 g/L of furfural and 2.78 g/L of 5-hydroxymethyl furfural (5-HMF) were generated with high solid loading (10 wt%), the presence of commercial catalyst ZSM-5 and co-solvent tetrahydrofuran (THF) at 140 °C for 200 min. Via this method, almost 100% of hemicellulose was transformed to furfural, and 40.71% of cellulose was transformed to 5-HMF, which was based on the theoretical yield of HMF (8.35 g) from glucose (29.30 g) produced from cellulose. After the reaction, the catalyst ZSM-5 was the main component in the solid residue and kept a suitable performance. THF azeotrope was easily separated from the slurry by evaporation. During the removal of THF, lignin was precipitated from the liquid phase and showed lower molecular weight and abundant active groups, which was a potential feedstock for producing valuable aromatics and polymers. Thus, in a one-pot reaction, the ideal yield of furan aldehydes from raw biomass was obtained on a lab scale, and the catalyst, THF, and LiBr were easily recycled, which provided an option to realize the economical production of sustainable furan aldehydes from raw biomass.
Keywords: furfural; 5-HMF; corn stover; acidic LiBr treatment; THF furfural; 5-HMF; corn stover; acidic LiBr treatment; THF

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MDPI and ACS Style

Gao, M.; Xin, Q.; Sun, W.; Xiao, J.; Lu, X. Transformation of Corn Stover into Furan Aldehydes by One-Pot Reaction with Acidic Lithium Bromide Solution. Int. J. Mol. Sci. 2022, 23, 14901. https://doi.org/10.3390/ijms232314901

AMA Style

Gao M, Xin Q, Sun W, Xiao J, Lu X. Transformation of Corn Stover into Furan Aldehydes by One-Pot Reaction with Acidic Lithium Bromide Solution. International Journal of Molecular Sciences. 2022; 23(23):14901. https://doi.org/10.3390/ijms232314901

Chicago/Turabian Style

Gao, Meixiang, Qi Xin, Wan Sun, Jiaqi Xiao, and Xianqin Lu. 2022. "Transformation of Corn Stover into Furan Aldehydes by One-Pot Reaction with Acidic Lithium Bromide Solution" International Journal of Molecular Sciences 23, no. 23: 14901. https://doi.org/10.3390/ijms232314901

APA Style

Gao, M., Xin, Q., Sun, W., Xiao, J., & Lu, X. (2022). Transformation of Corn Stover into Furan Aldehydes by One-Pot Reaction with Acidic Lithium Bromide Solution. International Journal of Molecular Sciences, 23(23), 14901. https://doi.org/10.3390/ijms232314901

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