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<p>Since lignocellulosic biomass is the only naturally occurring renewable feedstock that contains aromatic rings, it has been recognised as a promising alternative to fossil fuels in chemicals and fuel derivatives. Just over five percent of lignin is employed in discounted commercial applications, primarily as a subpar fuel for heat and power or as a concrete additive (lignosulfonate). Until now, the controlled fabrication of carboxylated lignin with a well-defined structure and composition remains a great challenge. Herein, we developed a simple approach using kraft lignin as the raw material of the catalyst, denoted as (<i>Lignin-COOH</i>), by a planetary ball mill in the presence of dry ice as an oxidant ensued by protonation. The catalyst contained aliphatic moieties with desirable thermal stability and a carboxylic group (2.7&#xa0;mmol&#xa0;g<sup>–1</sup>). Lignin-COOH hydrolysis cellulose to glucose (88.6%), while the eucalyptus (62%) glucose within 15 min at 180 °C in (120 ppm) HCl.</p>

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Lignin-derived carboxylated carbon nanocatalysts for biomass hydrolysis: case study cellulose and eucalyptus

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • Hassan Idris Abdu,
  • Keyi Qiao,
  • Yaodong Guo,
  • Taslim Aboudou,
  • Jiayi Li,
  • Sisi Liu,
  • Jiaqian Feng,
  • Siyang Zhang,
  • Zhuoman Zhang,
  • Jiaying Li,
  • Xiaowen Zhang

摘要

Since lignocellulosic biomass is the only naturally occurring renewable feedstock that contains aromatic rings, it has been recognised as a promising alternative to fossil fuels in chemicals and fuel derivatives. Just over five percent of lignin is employed in discounted commercial applications, primarily as a subpar fuel for heat and power or as a concrete additive (lignosulfonate). Until now, the controlled fabrication of carboxylated lignin with a well-defined structure and composition remains a great challenge. Herein, we developed a simple approach using kraft lignin as the raw material of the catalyst, denoted as (Lignin-COOH), by a planetary ball mill in the presence of dry ice as an oxidant ensued by protonation. The catalyst contained aliphatic moieties with desirable thermal stability and a carboxylic group (2.7 mmol g–1). Lignin-COOH hydrolysis cellulose to glucose (88.6%), while the eucalyptus (62%) glucose within 15 min at 180 °C in (120 ppm) HCl.