Efficient reverse water gas shift reaction at low temperatures over an iron supported catalyst under an electric field

Masaki Yamaoka; Keidai Tomozawa; Koki Sumiyoshi; Tadaharu Ueda; Shuhei Ogo

doi:10.1038/s41598-024-61017-2

Efficient reverse water gas shift reaction at low temperatures over an iron supported catalyst under an electric field

Sci Rep. 2024 May 3;14(1):10216. doi: 10.1038/s41598-024-61017-2.

Authors

Masaki Yamaoka¹, Keidai Tomozawa¹, Koki Sumiyoshi¹, Tadaharu Ueda^{1

2

3}, Shuhei Ogo^{4

5}

Affiliations

¹ Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, 783-8502, Japan.
² Marine Core Research Institute, Kochi University, Nankoku, Kochi, 783-8502, Japan.
³ MEDi Center, Kochi University, Kochi, 780-0842, Japan.
⁴ Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, 783-8502, Japan. [email protected].
⁵ Marine Core Research Institute, Kochi University, Nankoku, Kochi, 783-8502, Japan. [email protected].

Abstract

The development of high-performance Fe-based catalysts is attractive because Fe is a cost-effective and earth-abundant element. Application of an external electric field and an appropriate catalytic support to an Fe-based catalyst enabled the reverse water-gas shift reaction to proceed with high activity, selectivity, and durability even at the low temperature of 423 K. The Fe-supported catalyst showed superior CO selectivity (≈ 100%) compared to the Co- or Ni-supported catalyst. The apparent activation energy (5.9 kJ mol^-1) over the Fe/Ce_0.4Al_0.1Zr_0.5O₂ catalyst under an electric field was much lower than that without an electric field (61.4 kJ mol^-1).

Grants and funding

20M1E05Y/NEDO Feasibility Study Program (Uncharted Territory Challenge 2050)