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Correlation on the characteristics and performance of V/Ti-based SO2 oxidation catalysts prepared by a mechanochemical method

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Abstract

The reaction characteristics of the SO2 oxidation catalyst by the catalyst preparation method were analyzed by investigating the catalyst properties on the TiO2 support using a vanadium-alkali (K) compound containing the catalyst. The slurry mix method and the dry ball milling method were used for the production of the catalyst. In this process, the difference in interaction between the active material (V) and the support (TiO2) has been confirmed. Especially, the high proportion of non-stoichiometric species of the initial catalyst reflects the high interaction between vanadium and TiO2. Therefore, an increase in non-stoichiometric species such as V4+ indicates an increase in the interaction between TiO2 and V2O5. In particular, the interaction between the support-active material improves the transfer of SO2 adsorbed on the support TiO2 to the active material (V2O5). Therefore, it induces the production of a high proportion of the active substance (VVO)2O(SO4)44− and consequently increases the SO2 oxidation performance.

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Acknowledgements

This research is the result of an academic research service (No. CX72-18-0015) supported by Korea Electric Power Research Institute as a KEPCO fund in 2018.

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Authors and Affiliations

  1. Department of Environmental Energy Engineering, Graduate School of Kyonggi University, Suwon, Gyeonggi-Do, 16227, South Korea

    Ki Bok Nam & Min Su Kim

  2. Department of Environmental Energy Engineering, Kyonggi University, Suwon, Gyeonggi-Do, 16227, South Korea

    Sung Chang Hong

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  1. Ki Bok Nam
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  2. Min Su Kim
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Contributions

K.B. Nam conceptualized the work with motivations designed the experiments, interpreted/refined the data, and drafted the manuscript. M.S. Kim performed the experiments, interpreted/refined the data, and provided comments on the manuscript. S.C. Hong a provided comments on the manuscript.

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Correspondence to Sung Chang Hong.

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Nam, K.B., Kim, M.S. & Hong, S.C. Correlation on the characteristics and performance of V/Ti-based SO2 oxidation catalysts prepared by a mechanochemical method. Res Chem Intermed 50, 2157–2173 (2024). https://doi.org/10.1007/s11164-024-05261-1

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