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Summary & Details

The Phenomenological Oxide Film Formation Model in Rh Type Three-way Catalysts

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Publication code: 20264067

Paper/Info type: International Journal of Automotive Engineering

Vol.17 No.1

Pages: 7-14(Total 8 p)

Date of publication: Jan 2026

Publisher: JSAE

Language: English

Detailed Information

Category(E)	Research paper
Author(E)	1) Aiko Takano, 2) Jin Kusaka
Affiliation(E)	1) Waseda University, 2) Waseda University
Abstract(E)	Clarifying TWC purification mechanism and developing predictive models are crucial for future hybrid powertrains with spark ignition engines in passenger vehicles. By using a detailed surface reaction model CO oxidation reaction on Rh surface was simulated. Adding the phenomenological reactions expressing the formation and decomposition of oxide film to the CO+O2 surface reaction mechanism on Rh made it possible to reproduce the result of light-off test and XPS analysis. Through this research, the mechanism of oxide film formation and decomposition on Rh surface and the effect of Rh oxidation to the purification performance became clear.

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