Oxidation of soot in gasoline exhaust on Mn2O3 catalyst

Singer, Christian; Hahn, Christoph; Phan, Dai Quy; Russwurm, Tim; Wensing, Michael; Koegl, Matthias; Zigan, Lars; Kureti, Sven

doi:10.1016/j.apcata.2023.119316

Applied Catalysis A: General

2023

DOI: 10.1016/j.apcata.2023.119316

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Oxidation of soot in gasoline exhaust on Mn2O3 catalyst

Christian Singer

Christoph Hahn

Dai Quy Phan

et al.

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2024

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Cited by 4 publications

References 60 publications

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Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

Ma,

Guo,

Xiong

et al. 2024

ChemCatChem

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Environmental issues exert a significant influence on the human life. Soot particles have attracted attention as a major source of pollution. Significant progress has been made in the research of efficient soot combustion catalysts. The distinctive bonding properties on the 4f orbitals of rare earth elements exhibit excellent catalytic performance for soot combustion. This comprehensive review explores recent advancements in the design of catalysts based on rare earth oxides, with a specific focus on various catalytic materials (La‐based, Ce‐based, Pr‐based and other rare earth elements), synthesis methods, catalyst morphology, catalytic performance and the intricate mechanisms governing their performance in catalytic soot combustion. The activity and selectivity of different rare earth catalysts in various reaction atmospheres are also summarized in the article. Finally, the challenges associated with rare earth oxide‐based catalysts and their potential for future development in the soot combustion are highlighted. This review establishes a fundamental basis for the further design of catalytic materials that exhibit enhanced efficiency and stability.

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Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

Ma,

Guo,

Xiong

et al. 2024

ChemCatChem

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Effect of SO2 on the soot oxidation activity of flame spray pyrolysis-made manganese oxide catalyst in gasoline model exhaust

Werther,

Singer,

Gross

et al. 2024

Reac Kinet Mech Cat

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This study deals with the effect of SO2 on the soot oxidation activity of flame spray pyrolysis-prepared manganese oxide in gasoline model exhaust. The catalyst was exposed to 15 and 30 ppm SO2 at 250 °C and was characterized by N2 physisorption, SO2-TPD, O2-TPD, DRIFTS, XPS and PXRD. It was shown that the SO2 adsorption results in the formation of surface sulfate, while the uptake increased from 26 to 45 μmol/g with growing sulfur content of the model exhaust. The sulfur adsorption reduces the mobility and availability of oxygen on the catalyst thus inhibiting the oxygen transport from gas phase over the catalyst to the contact points of the soot. Consequently, the soot oxidation activity, investigated with tight contact blends of catalyst and soot, decreases with inclining amount of sulfate. Finally, the sulfate species were mostly removed by thermal treatment at 705 °C, which additionally provoked catalyst sintering. As a result, the catalytic performance of the de-sulfated catalyst was slightly lower compared to the sulfated sample.

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Determination of swelling operation parameters to improve the hierarchy of natural zeolite Lampung after synthesis

Intang,

Susmanto,

Bustan

et al. 2024

South African Journal of Chemical Engineering

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Oxidation of soot in gasoline exhaust on Mn2O3 catalyst

Cited by 4 publications

References 60 publications

Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

Research Advances in Rare Earth Oxide‐Based Catalysts for Soot Combustion

Effect of SO2 on the soot oxidation activity of flame spray pyrolysis-made manganese oxide catalyst in gasoline model exhaust

Determination of swelling operation parameters to improve the hierarchy of natural zeolite Lampung after synthesis

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