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<p>Aromatics, which are widely used as basic feedstock in industrial production, have traditionally been derived mainly from petroleum resources. Producing aromatics from furan-based molecules via Diels–Alder (D-A) cycloaddition offers a highly promising renewable route to reduce reliance on petroleum resources. Conventional solid acids such as zeolites and MOFs often promote the hydrolysis of DMF, leading to its polymerization and coke deposition, thereby reducing DMF utilization efficiency. Moreover, the structure–activity relationship in this reaction has not been fully elucidated. This study presents a novel supported tungsten–phosphorus catalyst that exhibits high catalytic activity and selectivity while effectively suppressing DMF hydrolysis and improving its utilization efficiency. This study also provides a detailed elucidation of the influence of both the ratio and the relative positions of Brønsted and Lewis acid sites on the reaction. Specifically, under the reaction conditions of 200&#xa0;°C and 15&#xa0;h, the 25W-15P/SBA-15 catalyst achieved 88% DMF conversion and 98% aromatic selectivity, with a carbon balance of 85%. Besides, the study also revealed that the presence of a few amount of L acid sites can significantly reduce the apparent energies (<i>E</i><sub>a</sub>) of aromatics formation. When the amount of Lewis acid sites was further increased, the <i>E</i><sub>a</sub> of the reaction no longer decreased, and the reaction rate was controlled by the dehydration process occurring at the Brønsted acid sites. Moreover, when the L acid and B acid sites are too far apart, they cannot effectively achieve cooperative catalysis in the D-A conversion of DMF and AA.</p>

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High selectivity conversion of 2,5-dimethylfuran to aromatics over W-P/SBA-15 catalysts

  • 期刊论文

  • 发表日期：

    2025年10月6日

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  • Xu Chen,
  • Bing Yan,
  • Guangming Min,
  • Yajing Song,
  • Lei Shi,
  • Zonghui Liu,
  • Bing Xue

摘要

Aromatics, which are widely used as basic feedstock in industrial production, have traditionally been derived mainly from petroleum resources. Producing aromatics from furan-based molecules via Diels–Alder (D-A) cycloaddition offers a highly promising renewable route to reduce reliance on petroleum resources. Conventional solid acids such as zeolites and MOFs often promote the hydrolysis of DMF, leading to its polymerization and coke deposition, thereby reducing DMF utilization efficiency. Moreover, the structure–activity relationship in this reaction has not been fully elucidated. This study presents a novel supported tungsten–phosphorus catalyst that exhibits high catalytic activity and selectivity while effectively suppressing DMF hydrolysis and improving its utilization efficiency. This study also provides a detailed elucidation of the influence of both the ratio and the relative positions of Brønsted and Lewis acid sites on the reaction. Specifically, under the reaction conditions of 200 °C and 15 h, the 25W-15P/SBA-15 catalyst achieved 88% DMF conversion and 98% aromatic selectivity, with a carbon balance of 85%. Besides, the study also revealed that the presence of a few amount of L acid sites can significantly reduce the apparent energies (Ea) of aromatics formation. When the amount of Lewis acid sites was further increased, the Ea of the reaction no longer decreased, and the reaction rate was controlled by the dehydration process occurring at the Brønsted acid sites. Moreover, when the L acid and B acid sites are too far apart, they cannot effectively achieve cooperative catalysis in the D-A conversion of DMF and AA.