Highly stable Fe/CeO<sub>2</sub> catalyst for the reverse water gas shift reaction in the presence of H<sub>2</sub>S

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  • Highly stable Fe/CeO_2 catalyst for the reverse water gas shift reaction in the presence of H_2S

説明

This study focused on evaluating the catalytic properties for the reverse water gas shift reaction (RWGS: CO_2 + H_2 → CO + H_2O ΔH^0 = 42.1 kJ mol^<−1>) in the presence of hydrogen sulfide (H_2S) over a Fe/CeO_2 catalyst, commercial Cu–Zn catalyst for the WGS reaction (MDC-7), and Co–Mo catalyst for hydrocarbon desulfurization. The Fe/CeO_2 catalyst exhibited a relatively high catalytic activity to RWGS, compared to the commercial MDC-7 and Co–Mo catalysts. In addition, the Fe/CeO_2 catalyst showed stable performance in the RWGS environment that contained high concentrations of H_2S. The role of co-feeding H_2S was investigated over the Fe/CeO_2 catalyst by the temperature programmed reaction (TPR) of CO_2 and H_2 in the presence of H_2S. The result of TPR indicated that the co-feeding H_2S might enhance RWGS performance due to H_2S acting as the hydrogen source to reduce CO_2.

収録刊行物

  • RSC Advances

    RSC Advances 13 (17), 11525-11529, 2023-04-12

    Royal Society of Chemistry (RSC)

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