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Abstract <p>A comparative study was conducted of methane adsorption by CH<sub>4</sub>, propane (C<sub>3</sub>N<sub>8</sub>), and <i>n‑</i>butane (<i>n</i>-C<sub>4</sub>N<sub>10</sub>), as well as depleted mixtures of them, on the highly active microporous adsorbent KAUSORB-VA with a micropore volume of 0.68 cm<sup>3</sup>/g at temperatures of 288, 303, and 335 K in a wide range of absolute pressures up to 4 MPa. The isotherms of individual gas adsorption were calculated using the Dubinin–Radushkevich equation of the theory of volumetric filling of micropores. The adsorption of binary mixtures of CH<sub>4</sub>/C<sub>3</sub>N<sub>8</sub> and CH<sub>4</sub>/<i>n</i>-C<sub>4</sub>N<sub>10</sub> with a component content of 80/20 and 85/15 mol %, respectively, was calculated using the IAST method. The potential selectivity of the KAUSORB-VA adsorbent in adsorption gas-separation processes was assessed for their further use.</p>

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Adsorption Separation of CH4/C3H8 and CH4/n-C4H10 Binary Gas Mixtures Using the Highly Active Microporous Adsorbent KAUSORB-VA

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • V. Yu. Yakovlev,
  • S. D. Artamonova,
  • A. A. Fomkin,
  • A. V. Shkolin,
  • I. E. Menshchikov

摘要

Abstract

A comparative study was conducted of methane adsorption by CH4, propane (C3N8), and n‑butane (n-C4N10), as well as depleted mixtures of them, on the highly active microporous adsorbent KAUSORB-VA with a micropore volume of 0.68 cm3/g at temperatures of 288, 303, and 335 K in a wide range of absolute pressures up to 4 MPa. The isotherms of individual gas adsorption were calculated using the Dubinin–Radushkevich equation of the theory of volumetric filling of micropores. The adsorption of binary mixtures of CH4/C3N8 and CH4/n-C4N10 with a component content of 80/20 and 85/15 mol %, respectively, was calculated using the IAST method. The potential selectivity of the KAUSORB-VA adsorbent in adsorption gas-separation processes was assessed for their further use.