| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.2261 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Effect of Pt substitution to Pd/Rh based three-way catalysts (TWCs) on thermal stability |
| 초록 |
In recent five years, increasing usage of Pd for commercial TWC has pushed its price to the highest level compared to Pt (from yr2016: Pd $500 vs. Pt $950 to yr2021: Pd $2380 vs. Pt $1300). We characterized thermal stability as the primary concern in the TWC performance, focusing on the substitution of Pt to the typical Pd/Rh TWC formulation. We evaluated six aged commercial TWCs consisting of the Pd/Rh based and partially substituted Pt/Pd/Rh TWCs employed as a function of the location of the catalytic converter (WCC front, WCC rear, and UCC) and the PGM loading. The reactor data showed that the aged Pd/Rh catalysts were less deactivated than aged Pt/Rh catalysts. The series of catalysts with low PGM loading exhibited similar thermal stability for TWC performance, regardless of the presence of Pt except for the C3H8 oxidation. For high PGM loading TWCs placed in front warming-up brick, aged catalytic performance was strongly affected by the presence of Pt. The Pt substituted Pt/Pd/Rh catalyst showed superior thermal stability than the Pd/Rh catalyst. This study provides possible guidance in applying the Pt substituted TWC with reduced cost and improved thermal stability. |
| 저자 |
김도영1, 배우빈1, 변상우1, 윤달영2, 정창호2, 강성봉1
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| 소속 |
1광주과학기술원, 2현대자동차 촉매연구팀 |
| 키워드 |
촉매 |
| E-Mail |
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| 원문파일 |
초록 보기 |
