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| Fractionation of Corn Stalk for Cellulose, Hemicellulose, and Lignin Components Using a Mild Acetic Acid/Formic Acid/Water System |
| Received:November 30, 2025 Revised:December 17, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.02.010 |
| Key Words:corn stalk acetic acid/formic acid/water system organosolv lignin crude cellulose |
| Fund Project:国家自然科学基金面上项目（22578431）。 |
| Author Name | Affiliation | Postcode | | YANG Xiaomeng* | Institute of Biomass Science and Engineering, College of Food Science and Engineering, Henan University of Technology, Zhengzhou, He’nan Province, 450001 | 450001 | | QIN Han | School of Chemical Engineering, Zhengzhou University, Zhengzhou, He’nan Province, 450001 | 450001 | | QIAN Xiaolei | School of Chemical Engineering, Zhengzhou University, Zhengzhou, He’nan Province, 450001 | 450001 | | WU Dan | School of Chemical Engineering, Zhengzhou University, Zhengzhou, He’nan Province, 450001 | 450001 | | ZHANG Yongsheng* | School of Chemical Engineering, Zhengzhou University, Zhengzhou, He’nan Province, 450001 | 450001 | | XU Chunbao* | School of Energy and Environment, City University of Hong Kong, Hong Kong, China, 999007 | 999007 |
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| Abstract:This study employed corn stalk as feedstock and achieved its complete components separation through an efficient and sustainable acetic acid/formic acid/water system. The results showed that under mild conditions of acetic acid/formic acid/water ration of 3∶6∶1(volume ratio), reaction temperature and reaction time of 130 ℃ and 3 h, respectively, the yields of hemicellulose, organosolv lignin (OL), and crude cellulose were 14.95%, 10.30%, and 52.90%, respectively. The purities of OL and crude cellulose were 95.55% and 40.96%, respectively. Mechanistic analysis revealed that acetic acid/formic acid could effectively cleave the chemical bond between lignin and hemicellulose, promote the β-O-4 bond breakage of lignin, and improve the solubility of OL in organic acid system. Additionally, the obtained high-purity OL and crude cellulose could serve as high-quality raw materials for downstream bio-based chemical production. |
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