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<p>A facile pelletization of a composite material comprising Ag-ion-exchanged zeolite (Ag-zeolite) and polyacrylonitrile (PAN) has been successfully achieved for the adsorption of ethylene. Comprehensive studies were conducted to investigate the effects of Ag-zeolite, the mass ratio of PAN to Ag-zeolite, as well as molecular weight of PAN on the adsorption performance of ethylene. The relationship between the inner diameter of needles for the formation of droplet and the pellet size has also been investigated. This work reveals that isolated Ag<sup>+</sup> ions present in zeolites play an important role for the adsorption of ethylene (C<sub>2</sub>H<sub>4</sub>), and Ag-FER zeolite exhibits a higher C<sub>2</sub>H<sub>4</sub> adsorption capacity than Ag-FAU and Ag-RHO zeolites. Furthermore, the mass amount of PAN should be regulated concisely in order to reach an optimal balance between the moldability and the adsorption capacity of the composite pellets, which demonstrates excellent thermal and cyclic stability of PAN-Ag-FER (57 wt% Ag-FER, 5.8 wt% Ag loading) over multiple adsorption–desorption cycles, underscoring its strong potential for practical applications.</p>

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Fabrication of zeolite-polymer composite pellets for ethylene adsorption by droplet formation

  • 期刊论文

  • 发表日期：

    2026年3月25日

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  • Yingxue Liu,
  • Mingmei Zhang,
  • Xinqian Fang,
  • Fan Wu,
  • Xin Wang,
  • Dekai Liu,
  • Kai Zhou,
  • Yifan Zhao,
  • Haijun Chen

摘要

A facile pelletization of a composite material comprising Ag-ion-exchanged zeolite (Ag-zeolite) and polyacrylonitrile (PAN) has been successfully achieved for the adsorption of ethylene. Comprehensive studies were conducted to investigate the effects of Ag-zeolite, the mass ratio of PAN to Ag-zeolite, as well as molecular weight of PAN on the adsorption performance of ethylene. The relationship between the inner diameter of needles for the formation of droplet and the pellet size has also been investigated. This work reveals that isolated Ag+ ions present in zeolites play an important role for the adsorption of ethylene (C2H4), and Ag-FER zeolite exhibits a higher C2H4 adsorption capacity than Ag-FAU and Ag-RHO zeolites. Furthermore, the mass amount of PAN should be regulated concisely in order to reach an optimal balance between the moldability and the adsorption capacity of the composite pellets, which demonstrates excellent thermal and cyclic stability of PAN-Ag-FER (57 wt% Ag-FER, 5.8 wt% Ag loading) over multiple adsorption–desorption cycles, underscoring its strong potential for practical applications.