Highly stable Fe/CeO2 catalyst for the reverse water gas shift reaction in the presence of H2S† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3ra01323e
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ABSTRACT: This study focused on evaluating the catalytic properties for the reverse water gas shift reaction (RWGS: CO2 + H2 → CO + H2O ΔH0 = 42.1 kJ mol−1) in the presence of hydrogen sulfide (H2S) over a Fe/CeO2 catalyst, commercial Cu–Zn catalyst for the WGS reaction (MDC-7), and Co–Mo catalyst for hydrocarbon desulfurization. The Fe/CeO2 catalyst exhibited a relatively high catalytic activity to RWGS, compared to the commercial MDC-7 and Co–Mo catalysts. In addition, the Fe/CeO2 catalyst showed stable performance in the RWGS environment that contained high concentrations of H2S. The role of co-feeding H2S was investigated over the Fe/CeO2 catalyst by the temperature programmed reaction (TPR) of CO2 and H2 in the presence of H2S. The result of TPR indicated that the co-feeding H2S might enhance RWGS performance due to H2S acting as the hydrogen source to reduce CO2. The Fe/CeO2 catalyst showed a high activity for reverse water gas shift (RWGS) reaction. Almost no loss of RWGS activity on Fe/CeO2 catalysts even in reaction atmospheres containing high concentrations of hydrogen sulfide.
SUBMITTER: Watanabe R
PROVIDER: S-EPMC10094219 | biostudies-literature | 2023 Apr
REPOSITORIES: biostudies-literature
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