Catalytic Light-off Performance of Thermal-aged Pd Three-way Catalyst and Surface Characterization of Pd Particles by FT-IR Spectroscopy
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- Ogawa Makoto
- 三菱自動車工業(株)
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- Tanabashi Koki
- 三菱自動車工業(株)
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- Iwachido Kinichi
- 三菱自動車工業(株)
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- Minami Shigekazu
- ユミコア日本触媒(株)
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- Kato Naohiro
- ユミコア日本触媒(株)
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- Goto Hideki
- ユミコア日本触媒(株)
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- Haneda Masaaki
- 名古屋工業大学
Bibliographic Information
- Other Title
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- 熱耐久したPd 触媒のライトオフ特性とFT-IR によるPd 粒子表面状態解析
- ネツ タイキュウ シタ Pd ショクバイ ノ ライトオフ トクセイ ト FT-IR ニ ヨル Pd リュウシ ヒョウメン ジョウタイ カイセキ
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Description
Improvement of the activity of three-way catalysts (TWC) is extremely important to meet future emission regulations. In this study, the detailed catalytic behavior of Pd particles on ceria/zirconia was investigated by FT-IR. After severe engine bench aging at 1000°C, Pd particles were greater than 20nm and significant decrease of reaction rate constant for both CO oxidation and NO reduction were observed. Characterization results provided a causal relationship between deterioration of NO reduction and the disappearance of active linear-CO on the Pd surface. In addition, a CO oxidation reaction mechanism on the Pd surface is proposed. This work highlights how FT-IR can be used to understand Pd surface chemistry on the support materials.
Journal
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- Transactions of Society of Automotive Engineers of Japan
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Transactions of Society of Automotive Engineers of Japan 50 (5), 1288-1293, 2019
Society of Automotive Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390282752329829632
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- NII Article ID
- 130007711601
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- NII Book ID
- AN00105913
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- ISSN
- 24339652
- 18830811
- 02878321
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- NDL BIB ID
- 030058590
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed