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March 27, 2026ACS Sustainable Chemistry & Engineering

Framework Al Location Engineering in MFI Zeolites for Tandem Catalytic Conversion of CO 2 and Toluene to Para-Xylene

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Authors

YGY. GuanAEAbel Xicola EscricheLHLi He

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Overview

Catalytic evaluation demonstrates enhanced para-xylene selectivity through aluminum location engineering in zeolites, indicating a promising method for sustainable aromatic synthesis.

Key Points

  • The aim is to improve para-xylene selectivity by engineering the framework aluminum distribution in MFI zeolites for CO2-toluene conversion.
  • Utilized ZnZrOx catalyst for CO2 hydrogenation alongside ZSM-5 zeolites with controlled AlF distributions.
  • Applied distinct organic structure-directing agents (OSDAs) to preferentially incorporate AlF.
  • Conducted in situ DRIFTS to study the reaction pathway of CO2 and toluene.
  • Conventional zeolite produced xylene isomers at thermodynamic ratio; p-X 24.2%, m-X 49.5%, o-X 26.3%.
  • n-butylamine-derived zeolite increased PX selectivity to 39.3%.
  • Ethylenediamine-derived zeolite achieved 77.0% PX selectivity with m-X and o-X suppressed to 5.3% and 17.7%, respectively.

Cite This Study

Guan et al. (2026) studied this question.

synapsesocial.com/papers/69c6209315a0a509bde19166https://doi.org/10.1021/acssuschemeng.6c01002
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