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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Thermally stable Pt and Pd nanoparticles deposited on γ-Al2O3 for three way catalysis

2012년 2월 14일 15시 20분 52초
IND.P-87 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 25일 (수요일) 18:00~21:00
저자 및
부경대학교 재료공학과, Korea
Noble-metal nanoparticles have been the subject of a considerable amount of study because of their unique behavior and their applicability in catalytic and many other fields. Precious metals like Pt and Pd play efficient role to remove the emission components in auto exhaust system such as nitrogen oxide (NOx), hydrocarbon (HC), and carbon monoxide (CO). Throughout the world the usage of precious metals has dramatically increased which tends the catalysts more expensive. Thus to minimize the amount of these metals is highly promising approach. In the present investigation we adopted a novel approach to reduce the noble metal content as well as desperation of these active components by Arc plasma deposition (APD). In this method one can synthesize the homogeneously dispersed Pt and Pd on powders like γ-Al2O3 [1,2]. Both deposited Pt and Pd particles on alumina improved the overall TWC performance at lower temperature. APD samples also suppress the usual sintering of active metal at higher temperatures, which expanding the lifespan of TWC catalysts. In addition, we compare APD materials with conventional impregnation samples. As synthesized Pt/Al2O3 and Pd/Al2O3 material were characterized by BET surface area, X-ray diffraction, TEM, ICP analysis and evaluated for TWC reactions. References: [1] Hinokuma S., Murakami K., Uemura K., Matsuda M., Ikeue K., Tsukahara N., Machida M. Top Catal 52, 2108, (2009) [2] Hinokuma S., Okamoto M., Ando E., Ikeue K., and Machida M. Catal Today, In press, (2011)