Intensification effect of peroxide hydrogen on the complete dissolution of lignocellulose under mild conditions
| Autor: | Tiejun Wang, Jinxing Long, Xinghua Zhang, Zhengqiu Yuan, Riyang Shu, Longlong Ma |
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| Rok vydání: | 2016 |
| Předmět: |
010405 organic chemistry
General Chemical Engineering Sulfuric acid General Chemistry 010402 general chemistry 01 natural sciences Peroxide 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Lignin Organic chemistry Hemicellulose Peroxymonosulfuric acid Cellulose Hydrogen peroxide Dissolution |
| Zdroj: | RSC Advances. 6:41032-41039 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c6ra06687a |
| Popis: | Lignocellulose is generally resistant to dissolving in water and conventional organic solvents, which significantly hinders its efficient utilization. In this work, we provide a novel and efficient technology on lignocellulose dissolution under mild conditions for down-stream conversion with heterogeneous catalysts. In a mixture of hydrogen peroxide, sulfuric acid, ethanol and water, corn straw was completely dissolved in the mixture at 170 °C for 120 min without significant volatile chemical production (less than 16%). Cellulose and hemicellulose existed as water-soluble oligosaccharides in the solvent, which were more easily converted than the original polymeric carbohydrate. During the dissolved process, peroxide hydrogen exhibited a significant intensification effect on dissolving the hemicellulose, decrystallization of cellulose and delignification with sulfuric acid. Furthermore, lignin was destroyed into fragments in the course of dissolution, which had a looser structure and lower molecular weight. |
| Databáze: | OpenAIRE |
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