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<p>The structural changes of cellulose during a hydrolysis over solid acid catalysts (oxidized carbon Sib450 and sulfonic resin Amberlyst-15) were studied. Cellulose structure alterations were characterized via XRD, FTIR and SEM, among other techniques. It was shown that the hydrolysis of cellulose in an aqueous medium over solid catalysts bearing strong and weak acid species proceeds by different mechanisms, at least under a limited mass-transfer condition. The results are interpreted in terms of the different ability of solid acids to form the electrical double layer—a region near the catalyst surface with a high concentration of hydroxonium ions in an aqueous medium.</p>

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The impact of surface acid species strength on the cellulose structural changes via hydrolysis over solid acid catalyst

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • Viktor A. Golubkov,
  • Yuriy N. Malyar,
  • Yulia N. Zaitseva,
  • Valentin V. Sychev,
  • Sergey A. Vorobyev,
  • Oxana P. Taran

摘要

The structural changes of cellulose during a hydrolysis over solid acid catalysts (oxidized carbon Sib450 and sulfonic resin Amberlyst-15) were studied. Cellulose structure alterations were characterized via XRD, FTIR and SEM, among other techniques. It was shown that the hydrolysis of cellulose in an aqueous medium over solid catalysts bearing strong and weak acid species proceeds by different mechanisms, at least under a limited mass-transfer condition. The results are interpreted in terms of the different ability of solid acids to form the electrical double layer—a region near the catalyst surface with a high concentration of hydroxonium ions in an aqueous medium.