Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw
Abstract The conversion of biomass faces the challenge of mass and heat transfer, as well as the exertion of heterogeneous catalyst, because raw biomass exists usually in solid state. In this work, the simultaneous transformation and dissolution of the three main components (hemicellulose, cellulose...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | ChemistryOpen |
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| Online Access: | https://doi.org/10.1002/open.202200247 |
| _version_ | 1797896266517053440 |
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| author | Diyan Qin Yancheng Liu Ruofeng Yang Dr. Jianmei Li Prof. Dr. Changwei Hu |
| author_facet | Diyan Qin Yancheng Liu Ruofeng Yang Dr. Jianmei Li Prof. Dr. Changwei Hu |
| author_sort | Diyan Qin |
| collection | DOAJ |
| description | Abstract The conversion of biomass faces the challenge of mass and heat transfer, as well as the exertion of heterogeneous catalyst, because raw biomass exists usually in solid state. In this work, the simultaneous transformation and dissolution of the three main components (hemicellulose, cellulose, lignin) in corn straw were achieved in ethanol/ valerolactone (GVL)/H2O (10 : 10 : 40, v/v/v) co‐solvent system. With the assistance of AlCl3 ⋅ 6H2O, the conversion of hemicellulose, lignin and cellulose was >96 % at 170 °C. The conversion of solid biomass into fluid, overcoming the mass transfer restrictions between solid biomass and solid catalysts, provides new raw materials to further upgrading. H2O could penetrate inside the crystalline cellulose to swell even dissolve it, while ethanol and GVL acted as media to dissolve especially the G unit in lignin. The H+ derived from AlCl3 ⋅ 6H2O hydrolysis could break the linkages of lignin‐hemicellulose and glycosidic bond in saccharides, and aluminum chloride promoted the next degradation of polysaccharides to small molecules. Consequently, as high as 33.2 % yield of levulinic acid and 42.2 % yield of furfural were obtained. The cleavage of β‐O‐4 and Cβ−Cγ bonds in lignin produced large amounts of lignin‐derived dimers and trimers. The total yield of monomeric phenols is up to 8 %. |
| first_indexed | 2024-04-10T07:40:06Z |
| format | Article |
| id | doaj.art-800489a9c6164ec68a4dd7b9e3df9041 |
| institution | Directory Open Access Journal |
| issn | 2191-1363 |
| language | English |
| last_indexed | 2024-04-10T07:40:06Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemistryOpen |
| spelling | doaj.art-800489a9c6164ec68a4dd7b9e3df90412023-02-23T11:56:36ZengWiley-VCHChemistryOpen2191-13632023-02-01122n/an/a10.1002/open.202200247Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn StrawDiyan Qin0Yancheng Liu1Ruofeng Yang2Dr. Jianmei Li3Prof. Dr. Changwei Hu4Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. ChinaKey Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. ChinaKey Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. ChinaKey Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. ChinaKey Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu Sichuan 610064 P. R. ChinaAbstract The conversion of biomass faces the challenge of mass and heat transfer, as well as the exertion of heterogeneous catalyst, because raw biomass exists usually in solid state. In this work, the simultaneous transformation and dissolution of the three main components (hemicellulose, cellulose, lignin) in corn straw were achieved in ethanol/ valerolactone (GVL)/H2O (10 : 10 : 40, v/v/v) co‐solvent system. With the assistance of AlCl3 ⋅ 6H2O, the conversion of hemicellulose, lignin and cellulose was >96 % at 170 °C. The conversion of solid biomass into fluid, overcoming the mass transfer restrictions between solid biomass and solid catalysts, provides new raw materials to further upgrading. H2O could penetrate inside the crystalline cellulose to swell even dissolve it, while ethanol and GVL acted as media to dissolve especially the G unit in lignin. The H+ derived from AlCl3 ⋅ 6H2O hydrolysis could break the linkages of lignin‐hemicellulose and glycosidic bond in saccharides, and aluminum chloride promoted the next degradation of polysaccharides to small molecules. Consequently, as high as 33.2 % yield of levulinic acid and 42.2 % yield of furfural were obtained. The cleavage of β‐O‐4 and Cβ−Cγ bonds in lignin produced large amounts of lignin‐derived dimers and trimers. The total yield of monomeric phenols is up to 8 %.https://doi.org/10.1002/open.202200247aluminum chloridecellulosehemicelluloseligninsolvothermal treatment |
| spellingShingle | Diyan Qin Yancheng Liu Ruofeng Yang Dr. Jianmei Li Prof. Dr. Changwei Hu Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw ChemistryOpen aluminum chloride cellulose hemicellulose lignin solvothermal treatment |
| title | Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw |
| title_full | Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw |
| title_fullStr | Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw |
| title_full_unstemmed | Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw |
| title_short | Complete Low‐Temperature Transformation and Dissolution of the Three Main Components in Corn Straw |
| title_sort | complete low temperature transformation and dissolution of the three main components in corn straw |
| topic | aluminum chloride cellulose hemicellulose lignin solvothermal treatment |
| url | https://doi.org/10.1002/open.202200247 |
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