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<p>Exploring the deactivation and regeneration of solid catalysts is of great importance for their industrial application. In this paper, the deactivation of Beta zeolite in the dehydration reaction of sorbitol to isosorbide was investigated in detail. The results indicate that the catalyst deactivation arises from the synergistic effect of coke deposition, framework dealumination and reorganization induced by the water from the dehydration reaction of sorbitol and high temperature in the regeneration process. After 30 regeneration cycles, the isosorbide yield decreased from 70.2 to 51.6%. This study provides fundamental insights into the deactivation behavior of Beta zeolite in sorbitol dehydration and offers theoretical guidance for designing long-life zeolite catalysts.</p>

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Deactivation behavior and regeneration of Beta zeolite for the dehydration of sorbitol to isosorbide

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • Huanhuan Chen,
  • Xiangyu Wang,
  • Huijuan Wei

摘要

Exploring the deactivation and regeneration of solid catalysts is of great importance for their industrial application. In this paper, the deactivation of Beta zeolite in the dehydration reaction of sorbitol to isosorbide was investigated in detail. The results indicate that the catalyst deactivation arises from the synergistic effect of coke deposition, framework dealumination and reorganization induced by the water from the dehydration reaction of sorbitol and high temperature in the regeneration process. After 30 regeneration cycles, the isosorbide yield decreased from 70.2 to 51.6%. This study provides fundamental insights into the deactivation behavior of Beta zeolite in sorbitol dehydration and offers theoretical guidance for designing long-life zeolite catalysts.