Insight into the effect of catalytic reactions on correlations of soot oxidation activity and microspatial structures

Huang, Junfeng; Wang, Shanshan; Gao, Jianbing; Wang, Yufeng; Ma, Chaochen; Tian, Gui Yun; Chen, Haibo

doi:10.1016/j.envpol.2023.121540

Cited by 10 publications

(1 citation statement)

References 58 publications

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“…CeO 2 had four main peaks, belonging to 28.5°(111), 33.0°(200), 47.4°(220), and 56.3°(311) crystal planes, which are attributed to the presence of crystalline cubic fluorite CeO 2 (JCPD 43-1002). 58 The characteristic diffraction peaks of Mn 2 O 3 (JCPD 41-1442) are shown in Figure 3A. All the diffraction peaks are caused by Mn 2 O 3 .…”

Section: ■ Introductionmentioning

confidence: 99%

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS

Sun,

Fang,

et al. 2023

Langmuir

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The aerosol pyrolysis method from nitrate precursors was used to prepare the Mn-CeO 2 catalyst containing Mn 2 O 3 , CeO 2 , and Mn-doped CeO 2 nanoparticles for catalyzing carbonous soot oxidation. The prepared Mn-CeO 2 catalysts have high specific surface areas, Ce 3+ ratio, and oxygen vacancy defects; these are a benefit for soot oxidation. The T 50 for soot oxidation on the 0.57Mn-CeO 2 catalyst is as low as 355 °C, which is 329 °C lower than that for soot oxidation without a catalyst. The catalysts were characterized using XRD, SEM-EDS, HRTEM, XPS, Raman spectroscopy, H 2 -TPR-MS, O 2 -TPD-MS, soot-TPR-MS, and operando DRIFTS-MS. The functions of Mn 2 O 3 , CeO 2 , and Mn-doped CeO 2 in the 0.57Mn-CeO 2 catalyst are unveiled. Mn-doped CeO 2 plays a key role and CeO 2 participates in soot oxidation, while Mn 2 O 3 is used to enhance higher ratios of Ce 3+ , via the reaction of Mn 3+ + Ce 4+ = Mn 4+ + Ce 3+ . The mechanism of soot oxidation on Mn-CeO 2 was proposed.

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Section: ■ Introductionmentioning

confidence: 99%

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS

Sun,

Fang,

et al. 2023

Langmuir

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Catalytic Oxidation of BTX (Benzene, Toluene, and Xylene) Using Metal Oxide Perovskites

Yuan,

Li,

Liu

et al. 2024

Adv Funct Materials

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The high toxicity, volatility, and dispersion of the light aromatics, benzene, toluene, and xylene (BTX) pose a serious threat to the environment and human health. Compared to incineration, catalytic oxidation technologies for BTX removal offer benefits such as low energy consumption, high efficiency, and low pollution. ABO3–type perovskite catalysts (ABO3–PCs) are particularly promising materials for the catalytic oxidation of BTX due to their high activity and thermal stability, as well as their adjustable elemental composition and flexible structure allowing their properties to be improved. Nonetheless, the full potential of ABO3–PCs for the oxidation of BTX has yet to be reached. This review systematically and critically analyses progress in the catalytic oxidation of BTX by ABO3–PCs. Catalytic performance is assessed for each category of perovskite, including non–doped, doped (A–, B–, or A/B–site doped), and loading type (noble metal, metal oxide, and matrix composite), with structure–activity relationships are established. A kinetic model and proposed mechanism for the catalytic oxidation of BTX are also presented. Finally, the challenges and opportunities of ABO3–PCs applied to BTX oxidation and other reactions are highlighted.

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Integrated catalytic systems for simultaneous NOx and PM reduction: a comprehensive evaluation of synergistic performance and combustion waste energy utilization

Bakhchin,

Ravi,

Douadi

et al. 2024

Environ Sci Pollut Res

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Insight into the effect of catalytic reactions on correlations of soot oxidation activity and microspatial structures

Cited by 10 publications

References 58 publications

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS

Catalytic Oxidation of BTX (Benzene, Toluene, and Xylene) Using Metal Oxide Perovskites

Integrated catalytic systems for simultaneous NOx and PM reduction: a comprehensive evaluation of synergistic performance and combustion waste energy utilization

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Insight into the effect of catalytic reactions on correlations of soot oxidation activity and microspatial structures

Cited by 10 publications

References 58 publications

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO2 Catalysts Using TG-MS and Operando DRIFTS-MS

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO2 Catalysts Using TG-MS and Operando DRIFTS-MS

Catalytic Oxidation of BTX (Benzene, Toluene, and Xylene) Using Metal Oxide Perovskites

Integrated catalytic systems for simultaneous NOx and PM reduction: a comprehensive evaluation of synergistic performance and combustion waste energy utilization

Contact Info

Product

Resources

About

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS

Unveiling the Surface Chemical Reactions during Multi-Phase Catalytic Oxidation of Soot on Nanoengineering/Interfacing/Doping-Prepared Mn-CeO₂ Catalysts Using TG-MS and Operando DRIFTS-MS