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    A Bifunctional Brønsted Acidic Deep Eutectic Solvent to Dissolve and Catalyze the Depolymerization of Alkali Lignin

    Lifen Li1, Zhigang Wu1, Xuedong Xi2, Baoyu Liu3, Yan Cao3, Hailong Xu3, Yingcheng Hu4,*

    Journal of Renewable Materials, Vol.9, No.2, pp. 219-235, 2021, DOI:10.32604/jrm.2021.012099

    Abstract Lignin is an abundant renewable macromolecular material in nature, and degradation of lignin to improve its hydroxyl content is the key to its efficient use. Alkali lignin (AL) was treated with Brønsted acidic deep eutectic solvent (DES) based on choline chloride and p-toluenesulfonic acid at mild reaction temperature, the structure of the lignin before and after degradation, as well as the composition of small molecules of lignin were analyzed in order to investigate the chemical structure changes of lignin with DES treatment, and the degradation mechanism of lignin in this acidic DES was elucidated in this… More >

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