한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제11권2호
  • /
  • Pages.134-139
  • /
  • 2003
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

린번 천연가스자동차용 산화촉매의 정화 및 열화특성

Conversion and Aging Characteristics of Oxidation Catalyst for Natural Gas Vehicle with Lean-burn System

  • 발행 : 2003.03.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

This study was carried out to investigate the aging and conversion characteristics of oxidation catalysts for a natural gas vehicle with lean-bum system. The conversion of $CH_4$ was observed over the various composition ratio of PMs(Precious metals) and washcoating methods. On the fresh catalysts, Pd affected on the activity of $CH_4$ at low temperature more than other PMs in Pd-only and Rh/Pd/Pt catalysts. The activity at low temperature increased as a mount of Pd increases. On the aged catalysts, the $CH_4$ conversion efficiency of Pd-only catalyst with mono-layer washcoat decreased more than that of the other catalysts of $CH_4$ conversion. It was observed that the thermal durability of Rh/Pd/Pt catalysts with double-layer washcoat was better than the single washcoat catalyst.

키워드

참고문헌

  1. R. L. McCromick, AW. Newlin, D. Mowery, 'Rapid Deactivation of Lean-Burn Natural Gas Engine Exhaust Oxidation Catalysts,' SAE 961976, 1996
  2. G. S. Son, 'A Study a Aftertreatment System for Utra Low Emission Vehicles,' Aju University, Ph.D. Thesis, pp.171-181, 1997
  3. B. C. Choi, P. S. lung, 'Improvement of Lambda-Window Range of the 3-Way Catalyst for Natural Gas Vehicles,' Transc. of KSAE, Vol.8, No.1, pp.92-100,2000
  4. B. Andersson, N. Cruise, 'Methane and Nitric Oxide Conversion Over Catalyst Dedicated for Natural Gas Vehicles,' SAE 2000-01-2928, 2000
  5. B. C. Choi, G. S. Son, E. K. Kim, K. Y. Lee, 'Effective Parameters on the Catalytic Reaction of NGV Catalytic Converter,' SAE 960239,1996
  6. W. B. Williamson, R. P. Richmond, J. G. Nunan, A. Bortun, H. J. Robota, 'Palladium and Platinum/Rhodium Dual-Catalyst NLEV and Tier Ⅱ a Close-Coupled Emission Solution,' SAE 2001-01-0923, 2001
  7. G. Smedler, P. H. Nilsson, S. Lundgren, G. Wirmark, 'Thermal Deactivation of a Three-Way catalyst : Changes of Structural and Performance Properties,' SAE 900273, 1990
  8. R. Burch, P. K. Loader, F. J. Urbano, 'Some Aspects Hydrocarbon Activation on Platinum Group Metal Combustion Catalysts,' Catalysis today, 27, pp.243-248, 1996 https://doi.org/10.1016/0920-5861(95)00194-8
  9. P. Pantu, G. R. Gavalas, 'Methane Partial Oxidation on Pt/CeO_2 and Pt/Al_2O_3, Catalysts,' Applied Catalysis A: General 223, pp.253-260, 2002 https://doi.org/10.1016/S0926-860X(01)00761-X