Simultaneous Removal of Soot and NOx from Diesel Engines over Three-Dimensionally Ordered Macroporous ZSM-5-Supported MMnOδ Catalysts

Wang, Lanyi; Yu, Di; Zhao, Zhen; Yu, Xuehua; Li, Dong; Zhou, Shengran; Zhong, Chengming; Hou, Jia; Yin, Chengyang; Fan, Xiaoqiang

doi:10.1021/acs.iecr.3c03051

Cited by 2 publications

(1 citation statement)

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“…The core of this technology is to develop highly efficient catalysts, which can convert soot, one of the most difficult oxidized components in the PM, to CO 2 at low temperatures. Pt-based materials have been widely used as commercial catalysts due to their high NO oxidation ability, which can promote soot oxidation through a NO 2 -assisted mechanism [6][7][8]. However, Pt as a scarce metal is expensive.…”

Section: Introductionmentioning

confidence: 99%

Modification of SmMn2O5 Catalyst with Silver for Soot Oxidation: Ag Loading and Metal–Support Interactions

Jin,

Liu,

et al. 2024

Catalysts

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A series of Ag-modified manganese-mullite (SmMn2O5) catalysts with different Ag contents (1, 3, and 6 wt.%) were prepared via a citric acid sol–gel method for catalytic soot oxidation. The catalysts were characterized by powder X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Raman spectroscopy, transmission electron microscopy (TEM), high-resolution transmission electron microscopy analysis (HRTEM), X-ray photoelectron spectroscopy (XPS), and H2 temperature-programmed reduction (H2-TPR). The soot oxidation activity of the mullite was significantly promoted by the addition of silver and affected by the loading amount of the metal. Herein, the influences of silver loading on the metal size distribution and its interactions with the mullite were studied. Based on these characterizations, a possible soot oxidation reaction mechanism was proposed for silver-modified SmMn2O5.

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Section: Introductionmentioning

confidence: 99%