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<p>The foundation industry, particularly the steel sector, is one of the major sources of global CO<sub>2</sub> emissions, with each ton of steel produced using iron ores contributing approximately 1.4 (direct reduced iron-based process) to 2 (blast furnace-based process) tons of CO<sub>2</sub>, with ironmaking accounting for approximately 70% of these emission. Here, we present a study on the potential of using a double perovskite, Ba<sub>2</sub>Ca<sub>0.66</sub>Nb<sub>0.34</sub>FeO<sub>6-δ</sub> (BCNF), as a CO<sub>2</sub> splitting catalyst that converts CO<sub>2</sub> into carbon monoxide (CO), a reducing agent in ironmaking, which can be reintegrated into the ironmaking process to enable ‘in-process’ decarbonisation and facilitate close-loop carbon recirculation. The study combines thermodynamic modelling, molecular dynamics simulations, material characterisation, and lab-scale experimental system design, demonstrating the efficiency and practicality of the use of BCNF for CO<sub>2</sub> emission reduction at a moderate temperature range. Simultaneous Thermal Analysis and COMSOL-based simulations were employed to optimise reactor design, maximising CO yield. An economic analysis further supports the scalability of this technology for decarbonising the steelmaking industry, which bears significance with the broader applicability to other foundation industrial sectors, including non-ferrous metal smelting, cement, glass, ceramics, and chemicals. This innovation offers a promising pathway towards sustainable industrial practices and contributes to global efforts to address climate change challenges.</p> Graphical Abstract <p></p>

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Understanding double perovskite BCNF as a CO2 splitting catalyst for industrial decarbonisation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月7日

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  • Weiwei Zhao,
  • Hongkun Ma,
  • Zixuan Wang,
  • Benjamin Grégoire,
  • Ao Lin,
  • Siyuan Dai,
  • Xuefeng Lin,
  • Ting Liang,
  • Jie Chen,
  • Tongtong Zhang,
  • Yulong Ding

摘要

The foundation industry, particularly the steel sector, is one of the major sources of global CO2 emissions, with each ton of steel produced using iron ores contributing approximately 1.4 (direct reduced iron-based process) to 2 (blast furnace-based process) tons of CO2, with ironmaking accounting for approximately 70% of these emission. Here, we present a study on the potential of using a double perovskite, Ba2Ca0.66Nb0.34FeO6-δ (BCNF), as a CO2 splitting catalyst that converts CO2 into carbon monoxide (CO), a reducing agent in ironmaking, which can be reintegrated into the ironmaking process to enable ‘in-process’ decarbonisation and facilitate close-loop carbon recirculation. The study combines thermodynamic modelling, molecular dynamics simulations, material characterisation, and lab-scale experimental system design, demonstrating the efficiency and practicality of the use of BCNF for CO2 emission reduction at a moderate temperature range. Simultaneous Thermal Analysis and COMSOL-based simulations were employed to optimise reactor design, maximising CO yield. An economic analysis further supports the scalability of this technology for decarbonising the steelmaking industry, which bears significance with the broader applicability to other foundation industrial sectors, including non-ferrous metal smelting, cement, glass, ceramics, and chemicals. This innovation offers a promising pathway towards sustainable industrial practices and contributes to global efforts to address climate change challenges.

Graphical Abstract