Dielectric barrier discharge plasma catalysis for diesel particulate matter oxidation: Optimization and synergistic differences in transition metal catalysts

IF 2.9 3区物理与天体物理 Q2 PHYSICS, APPLIED Plasma Processes and Polymers Pub Date : 2024-07-05 DOI:10.1002/ppap.202400073

Baoyong Ren, Wei Wang, Zuliang Wu, Jing Li, Erhao Gao, Jiali Zhu, Shuiliang Yao

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Abstract

Nonthermal plasma (NTP) enhanced catalytic oxidation of diesel particulate matter (DPM) is promising for applications. The synergistic effects of transition metal oxides (MOx, M = Mn, Cu, Ce, Fe, Co, Ti) and dielectric barrier discharge (DBD) plasma on DPM oxidation were investigated, and Fe2O3 showed the best synergistic effect. Cobalt‐doped iron oxide (Co–FeOx) displaying a spinel structure showed the best performance among M–FeOx (M = Co, Ce, Cu, Zn, Mn). The main intermediate product generated during the catalytic oxidation of DPM is monodentate carbonate. Under DBD plasma, a strong oxidizing intermediate ferrate (FeO42−) mainly produced at 100–200°C can promote the low‐temperature oxidation of DPM.

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用于柴油微粒物质氧化的介质阻挡放电等离子催化：过渡金属催化剂的优化和协同差异

非热等离子体（NTP）增强催化氧化柴油微粒物质（DPM）的应用前景广阔。研究了过渡金属氧化物（MOx，M = Mn、Cu、Ce、Fe、Co、Ti）和介质阻挡放电（DBD）等离子体对 DPM 氧化的协同效应，其中 Fe2O3 的协同效应最佳。在 M-FeOx（M = Co、Ce、Cu、Zn、Mn）中，具有尖晶石结构的掺钴氧化铁（Co-FeOx）表现出最佳性能。DPM 催化氧化过程中产生的主要中间产物是单齿碳酸盐。在 DBD 等离子体下，主要在 100-200°C 时产生的强氧化性中间产物铁酸（FeO42-）可促进 DPM 的低温氧化。

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来源期刊

Plasma Processes and Polymers 物理-高分子科学

CiteScore

6.60

自引率

11.40%

发文量

150

审稿时长

3 months

期刊介绍： Plasma Processes & Polymers focuses on the interdisciplinary field of low temperature plasma science, covering both experimental and theoretical aspects of fundamental and applied research in materials science, physics, chemistry and engineering in the area of plasma sources and plasma-based treatments.