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<p>The development of effective adsorbents for methanol removal is critical for purification processes and environmental purposes. In this study, ZSM-5 and mordenite zeolites were synthesized using a green hydrothermal approach without organic structure-directing agents, with the goal of optimizing synthesis parameters such as Si/Al ratio, crystallization time, and temperature. The physicochemical optimized properties of the zeolites were thoroughly investigated utilizing XRD, XRF, FTIR, TGA, BET, and SEM. The impact of synthesis factors on the crystallinity, porosity, and adsorption performance of zeolites was carefully investigated. Methanol adsorption tests demonstrated that adsorption capacity is highly influenced by textural qualities and framework composition. Mordenite adsorbed more methanol than ZSM-5, owing to increased microporosity and stronger contact with methanol molecules. ZSM-5, on the other hand, had a quicker saturation rate due to steric hindrance and diffusion limits within its medium-pore structure. Adsorption isotherm and kinetic simulations indicated a physisorption-dominated mechanism for both zeolites. The findings demonstrate the effect of synthesis optimization on zeolite performance and suggest a long-term strategy for developing high-efficiency adsorbents for methanol separation and purification.</p>

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Green synthesis and adsorption performance of ZSM-5 and mordenite zeolites for methanol removal

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Nadjat Chouat,
  • Boumediéne Bensafi,
  • Haroun Houicha,
  • Chahrazed Bakhtaoui,
  • Hafsa Boudinar,
  • Fatiha Djafri

摘要

The development of effective adsorbents for methanol removal is critical for purification processes and environmental purposes. In this study, ZSM-5 and mordenite zeolites were synthesized using a green hydrothermal approach without organic structure-directing agents, with the goal of optimizing synthesis parameters such as Si/Al ratio, crystallization time, and temperature. The physicochemical optimized properties of the zeolites were thoroughly investigated utilizing XRD, XRF, FTIR, TGA, BET, and SEM. The impact of synthesis factors on the crystallinity, porosity, and adsorption performance of zeolites was carefully investigated. Methanol adsorption tests demonstrated that adsorption capacity is highly influenced by textural qualities and framework composition. Mordenite adsorbed more methanol than ZSM-5, owing to increased microporosity and stronger contact with methanol molecules. ZSM-5, on the other hand, had a quicker saturation rate due to steric hindrance and diffusion limits within its medium-pore structure. Adsorption isotherm and kinetic simulations indicated a physisorption-dominated mechanism for both zeolites. The findings demonstrate the effect of synthesis optimization on zeolite performance and suggest a long-term strategy for developing high-efficiency adsorbents for methanol separation and purification.