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<p>Carbon dioxide capture via selective physisorption on porous solids holds significant promise as an energy-efficient solution over amine-based technologies. However, due to the broad temperature range (45 °C–200 °C) of various industrial carbon emission sources, achieving effective carbon dioxide capture with a single physisorbent across such a wide temperature range is crucial yet challenging. In this study, we present carbon dioxide capture at temperatures ranging from room temperature to 453 K on a robust and atypical pillar-layered framework (Zn-OX-DATZ). Zn-OX-DATZ demonstrates notable CO<sub>2</sub> adsorption capacity as well as high CO<sub>2</sub>/N<sub>2</sub> selectivity not only at ambient conditions but also at elevated temperatures up to 453 K. The high stability and durability of Zn-OX-DATZ have been validated by multicomponent breakthrough tests under various conditions. Through crystal structure analysis of CO<sub>2</sub>-loaded Zn-OX-DATZ, we have uncovered the origin of its highly favorable adsorption of CO<sub>2</sub>, which should be attributed to the amino group-decorated confined channels providing suitable traps for CO<sub>2</sub> accommodation.</p>

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Carbon dioxide capture over a wide temperature range by a robust atypical pillar-layered zinc-oxalate-triazolate framework

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • Fu-An Guo,
  • Kang Zhou,
  • Shanshan Mao,
  • Manglai Gao,
  • Hao Wang

摘要

Carbon dioxide capture via selective physisorption on porous solids holds significant promise as an energy-efficient solution over amine-based technologies. However, due to the broad temperature range (45 °C–200 °C) of various industrial carbon emission sources, achieving effective carbon dioxide capture with a single physisorbent across such a wide temperature range is crucial yet challenging. In this study, we present carbon dioxide capture at temperatures ranging from room temperature to 453 K on a robust and atypical pillar-layered framework (Zn-OX-DATZ). Zn-OX-DATZ demonstrates notable CO2 adsorption capacity as well as high CO2/N2 selectivity not only at ambient conditions but also at elevated temperatures up to 453 K. The high stability and durability of Zn-OX-DATZ have been validated by multicomponent breakthrough tests under various conditions. Through crystal structure analysis of CO2-loaded Zn-OX-DATZ, we have uncovered the origin of its highly favorable adsorption of CO2, which should be attributed to the amino group-decorated confined channels providing suitable traps for CO2 accommodation.