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<p>Ni–Fe bimetallic catalysts supported on Al<sub>2</sub>O<sub>3</sub> for CO<sub>2</sub> hydrogenation were prepared using low-cost metal precursors following acid to base precipitation method. The single metal catalysts were also prepared in a similar route for comparison studies. CO<sub>2</sub> methanation activity studies were conducted to screen the catalysts and XRD, N<sub>2</sub> physisorption studies, H<sub>2</sub>-TPR, CO<sub>2</sub>-TPD analysis were performed to corelate catalyst properties with performance. The 15Ni5Fe–Al<sub>2</sub>O<sub>3</sub> catalyst performed better in terms of activity, selectivity and resistance towards coking. The said catalyst also performed very well at low temperatures. Higher Fe loading was found to be detrimental towards methanation performance. The adopted preparation method is easily scalable and suitable for commercial application.</p>

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Studies on highly active and low-cost Ni–Fe Bi-metallic catalyst supported on alumina for CO2 hydrogenation reaction

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • P. R. Jithesh,
  • Robinson P. Ponminiessary,
  • Rajesh Gopinath,
  • Anandaram Sreekanth

摘要

Ni–Fe bimetallic catalysts supported on Al2O3 for CO2 hydrogenation were prepared using low-cost metal precursors following acid to base precipitation method. The single metal catalysts were also prepared in a similar route for comparison studies. CO2 methanation activity studies were conducted to screen the catalysts and XRD, N2 physisorption studies, H2-TPR, CO2-TPD analysis were performed to corelate catalyst properties with performance. The 15Ni5Fe–Al2O3 catalyst performed better in terms of activity, selectivity and resistance towards coking. The said catalyst also performed very well at low temperatures. Higher Fe loading was found to be detrimental towards methanation performance. The adopted preparation method is easily scalable and suitable for commercial application.