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<p>Chemocatalytic transformation of lignocellulosic biomass into platform chemicals and fuels is a promising alternative to conventional fermentation techniques. It is an efficient and economical way to produce chemicals and fuels. Metal-based composites are efficient catalysts due to enhanced surface-active sites. In this study, lead (Pb)-modified bimetallic oxide heterogeneous catalysts Pb/W-ZnO, PbO/Y₂O₃, and PbO/γ-Al₂O₃ were prepared by the wet impregnation method for the direct transformation of sugarcane bagasse cellulose into lactic acid. Cellulose was extracted from sugarcane bagasse using an autoclave-assisted sequential (alkali and acidic) pretreatment. The prepared catalysts, cellulose, and lactic acid were characterized. The concentration of acidic sites of Pb/W-ZnO, PbO/Y₂O₃, and PbO/γ-Al₂O₃ was found to be 3.0, 1.1, and 0.9 mmol/g, respectively. The optimum yield of cellulose was achieved at 62%. Chemocatalytic transformation of extracted cellulose was performed using a Teflon-lined autoclave at 245&#xa0;°C. The maximum yield of 57.8% lactic acid from sugarcane bagasse cellulose was achieved using Pb/W-ZnO. Lactic acid was not detected when PbO/Y₂O₃ and PbO/γ-Al₂O₃ catalysts were used. This confirms that the enhanced acidic sites of Pb/W-ZnO catalyzed the direct transformation of cellulose into lactic acid. The heterogeneous Pb/W-ZnO catalyst efficiently transformed sugarcane bagasse-derived cellulose into lactic acid, proving to be a facile, efficient, and cost-effective catalyst for lactic acid production.</p>

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Development of bimetallic catalysts for sustainable lactic acid production from agro-residual sugarcane Bagasse

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Attaullah Bukhari,
  • Fouzia Hameed,
  • Madiha Atta,
  • Abdulhakim Alamariad,
  • Fatimah M. Alzahrani,
  • Wissem Mnif,
  • Munawar Iqbal,
  • Arif Nazir,
  • Toheed Ahmed,
  • Muhammad Yasir

摘要

Chemocatalytic transformation of lignocellulosic biomass into platform chemicals and fuels is a promising alternative to conventional fermentation techniques. It is an efficient and economical way to produce chemicals and fuels. Metal-based composites are efficient catalysts due to enhanced surface-active sites. In this study, lead (Pb)-modified bimetallic oxide heterogeneous catalysts Pb/W-ZnO, PbO/Y₂O₃, and PbO/γ-Al₂O₃ were prepared by the wet impregnation method for the direct transformation of sugarcane bagasse cellulose into lactic acid. Cellulose was extracted from sugarcane bagasse using an autoclave-assisted sequential (alkali and acidic) pretreatment. The prepared catalysts, cellulose, and lactic acid were characterized. The concentration of acidic sites of Pb/W-ZnO, PbO/Y₂O₃, and PbO/γ-Al₂O₃ was found to be 3.0, 1.1, and 0.9 mmol/g, respectively. The optimum yield of cellulose was achieved at 62%. Chemocatalytic transformation of extracted cellulose was performed using a Teflon-lined autoclave at 245 °C. The maximum yield of 57.8% lactic acid from sugarcane bagasse cellulose was achieved using Pb/W-ZnO. Lactic acid was not detected when PbO/Y₂O₃ and PbO/γ-Al₂O₃ catalysts were used. This confirms that the enhanced acidic sites of Pb/W-ZnO catalyzed the direct transformation of cellulose into lactic acid. The heterogeneous Pb/W-ZnO catalyst efficiently transformed sugarcane bagasse-derived cellulose into lactic acid, proving to be a facile, efficient, and cost-effective catalyst for lactic acid production.