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<p>The main challenge for the RWGS reaction’s technological feasibility is the search for catalysts operating at low temperatures for CO<sub>2</sub> activation and conversion and preventing secondary reactions, such as methanation. In this work, the metals Copper (Cu), Iron (Fe), Ruthenium (Ru), and Nickel (Ni) catalysts and combined metals on Cerium-Zirconia support were synthesized, characterized, and tested in the RWGS. The Fe–Ni–Cu combination was the most effective at lower temperatures (400&#xa0;°C) compared to other metallic combinations 2, presenting 40% CO<sub>2</sub> conversion (equilibrium conversion is 42%) and high selectivity of 90%, CO as the main product and considerable reduction of by-products.</p> Graphical Abstract <p></p>

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The Effect of Promoters Added on Ni Supported on Cerium–Zirconia on CO2 Activation and CO Selectivity of the RWGS Reaction

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Camila Emilia Kozonoe,
  • Wallisson Senna Gomes Silva,
  • Martin Schmal

摘要

The main challenge for the RWGS reaction’s technological feasibility is the search for catalysts operating at low temperatures for CO2 activation and conversion and preventing secondary reactions, such as methanation. In this work, the metals Copper (Cu), Iron (Fe), Ruthenium (Ru), and Nickel (Ni) catalysts and combined metals on Cerium-Zirconia support were synthesized, characterized, and tested in the RWGS. The Fe–Ni–Cu combination was the most effective at lower temperatures (400 °C) compared to other metallic combinations 2, presenting 40% CO2 conversion (equilibrium conversion is 42%) and high selectivity of 90%, CO as the main product and considerable reduction of by-products.

Graphical Abstract