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Activity of CuCoCe layered double hydroxides catalysts and mechanism for C3H6-SCR

(2024) FUEL. 369.
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Abstract
CuxCoyCez-LDH prepared with layered double hydroxides (LDHs) as precursors was calcined to form CuxCoyCezO catalysts which were experimentally investigated for the selective catalytic reduction of NO by C3H6 (C3H6-SCR) in a fixed bed micro-reactor in the presence of O2. The physical–chemical properties of the catalysts were characterized and analyzed with respect to the SCR reactivity. In situ DRIFTS study was conducted to investigate the intermediate species during the SCR reaction. Results showed that NO conversion was as high as 95 % at 225 °C over Cu0.21Co0.48Ce0.31O catalyst. The excellent activity of the catalyst could be attributed to the synergistic effect between Cu, Co, and Ce. The XRD results showed that the synergistic effect between the metals was because of the formation of the solid solution between Cu, Co, and Ce, which promoted the interaction and dispersion of the three active components. EDS mapping further proved this point. According to the XPS data, Cu and Co had a redox reaction that increased the number of oxygen vacancies favorable for NO adsorption and dissociation. The redox properties between Cu and Co was further confirmed to improve the catalytic activity by H2-TPR. Additionally, the results of BET and NH3-TPD demonstrated that the SCR catalytic activity was promoted by the right quantity of acidic sites and the specific surface area. In situ DRIFTS experiments provided a mechanism for the C3H6-SCR reaction on the catalyst and confirmed the formation of reaction intermediates such as bidentate and monodentate nitrate, formate, and acetate.
Keywords
Nitrogen oxides, Selective catalytic reduction, CuCoCe-LDH, Hydrothermal method, HYDROTALCITE-LIKE COMPOUNDS, SELECTIVE REDUCTION, NOX, CU, OXIDATION, CO, OXIDES, ENHANCEMENT, PERFORMANCE, NANOPARTICLES

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MLA
Chen, Jiayin, et al. “Activity of CuCoCe Layered Double Hydroxides Catalysts and Mechanism for C3H6-SCR.” FUEL, vol. 369, 2024, doi:10.1016/j.fuel.2024.131789.
APA
Chen, J., Fu, W., Cai, C., Ning, S., Kashif, M., Deng, W., … Su, Y. (2024). Activity of CuCoCe layered double hydroxides catalysts and mechanism for C3H6-SCR. FUEL, 369. https://doi.org/10.1016/j.fuel.2024.131789
Chicago author-date
Chen, Jiayin, Wei Fu, Chen Cai, Shuying Ning, Muhammad Kashif, Wenyi Deng, Bingtao Zhao, and Yaxin Su. 2024. “Activity of CuCoCe Layered Double Hydroxides Catalysts and Mechanism for C3H6-SCR.” FUEL 369. https://doi.org/10.1016/j.fuel.2024.131789.
Chicago author-date (all authors)
Chen, Jiayin, Wei Fu, Chen Cai, Shuying Ning, Muhammad Kashif, Wenyi Deng, Bingtao Zhao, and Yaxin Su. 2024. “Activity of CuCoCe Layered Double Hydroxides Catalysts and Mechanism for C3H6-SCR.” FUEL 369. doi:10.1016/j.fuel.2024.131789.
Vancouver
1.
Chen J, Fu W, Cai C, Ning S, Kashif M, Deng W, et al. Activity of CuCoCe layered double hydroxides catalysts and mechanism for C3H6-SCR. FUEL. 2024;369.
IEEE
[1]
J. Chen et al., “Activity of CuCoCe layered double hydroxides catalysts and mechanism for C3H6-SCR,” FUEL, vol. 369, 2024.
@article{01HX1QQMQFBRA70MWFFZHCWQ1B,
  abstract     = {{CuxCoyCez-LDH prepared with layered double hydroxides (LDHs) as precursors was calcined to form CuxCoyCezO catalysts which were experimentally investigated for the selective catalytic reduction of NO by C3H6 (C3H6-SCR) in a fixed bed micro-reactor in the presence of O2. The physical–chemical properties of the catalysts were characterized and analyzed with respect to the SCR reactivity. In situ DRIFTS study was conducted to investigate the intermediate species during the SCR reaction. Results showed that NO conversion was as high as 95 % at 225 °C over Cu0.21Co0.48Ce0.31O catalyst. The excellent activity of the catalyst could be attributed to the synergistic effect between Cu, Co, and Ce. The XRD results showed that the synergistic effect between the metals was because of the formation of the solid solution between Cu, Co, and Ce, which promoted the interaction and dispersion of the three active components. EDS mapping further proved this point. According to the XPS data, Cu and Co had a redox reaction that increased the number of oxygen vacancies favorable for NO adsorption and dissociation. The redox properties between Cu and Co was further confirmed to improve the catalytic activity by H2-TPR. Additionally, the results of BET and NH3-TPD demonstrated that the SCR catalytic activity was promoted by the right quantity of acidic sites and the specific surface area. In situ DRIFTS experiments provided a mechanism for the C3H6-SCR reaction on the catalyst and confirmed the formation of reaction intermediates such as bidentate and monodentate nitrate, formate, and acetate.}},
  articleno    = {{131789}},
  author       = {{Chen, Jiayin and Fu, Wei and Cai, Chen and Ning, Shuying and Kashif, Muhammad and Deng, Wenyi and Zhao, Bingtao and Su, Yaxin}},
  issn         = {{0016-2361}},
  journal      = {{FUEL}},
  keywords     = {{Nitrogen oxides,Selective catalytic reduction,CuCoCe-LDH,Hydrothermal method,HYDROTALCITE-LIKE COMPOUNDS,SELECTIVE REDUCTION,NOX,CU,OXIDATION,CO,OXIDES,ENHANCEMENT,PERFORMANCE,NANOPARTICLES}},
  language     = {{eng}},
  pages        = {{13}},
  title        = {{Activity of CuCoCe layered double hydroxides catalysts and mechanism for C3H6-SCR}},
  url          = {{http://doi.org/10.1016/j.fuel.2024.131789}},
  volume       = {{369}},
  year         = {{2024}},
}

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