Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

De-NOx Characteristics for Cu-ZSM5/Alumina Beads Catalyst Filter in Urea-SCR System

Urea-SCR 시스템에서의 Cu-ZSM5/알루미나 비드 촉매필터의 De-NOx 특성

  • Jang, Young-Sang (Department of Geoenvironmental System Engineering, Hanyang University) ;
  • Shin, Young-Seop (Department of Geoenvironmental System Engineering, Hanyang University) ;
  • Lee, Byoung-Jun (AVL Korea Co., Ltd.) ;
  • Park, Jai-Koo (Department of Geoenvironmental System Engineering, Hanyang University)
  • 장영상 (한양대학교 지구환경시스템공학과) ;
  • 신영섭 (한양대학교 지구환경시스템공학과) ;
  • 이병준 (한국 에이브이엘) ;
  • 박재구 (한양대학교 지구환경시스템공학과)
  • Published : 2008.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The catalytic filter of Cu-ZSM5/alumina beads was considered to reduce NOx in the urea SCR system. Catalytic support of porous alumina beads with mean pore size $130{\mu}m$ and porosity $75{\sim}83%$ were prepared using foaming and gel-casting method. The Cu-ZSM5 catalysts were coated on the supporting alumina beads using $Cu(NO_3)_2$ by ion exchange method. After a washcoating process was applied to coat 10w% Cu-ZSM5 on porous alumina bead, coating layer was estimated $20{\mu}m$ in thickness. The characterization and the feasibility as a catalytic supports were investigated. And the NOx conversion test in Cu-ZSM5/Alumina Beads filter system was conducted by using Urea as reductants under laboratory test. The NOx conversion was increased as size and porosity of beads and observed more than 95% excellent NOx conversion above $300^{\circ}C$.

Keywords

References

  1. M. Koebel, M. Elsener and M. Kleemann, "Urea-SCR: A Promising Technique to Reduce NOx Emissions from Automotive Diesel Engines," Catal. Today, Vol.59, pp.335-345, 2000 https://doi.org/10.1016/S0920-5861(00)00299-6
  2. W. R. Miller, J. T. Klein, R. Mueller, W. Doelling and J. Zuerbig, "The Development of Urea-SCR Technology for US Heavy Duty Trucks," SAE 2000-01-0190, 2000
  3. J. H. Baik, S. D. Yim, I. S. Nam, Y. S. Mok, J.-H. Lee, B. K. Cho, and S. H. Oh, "Control of NOx Emissions from Diesel Engine by Selective Catalytic Reduction(SCR) with Urea," Top. Catal. Vol.30/31, pp.37-41, 2004 https://doi.org/10.1023/B:TOCA.0000029725.88068.97
  4. H. Yahiro and M. Iwamoto, "Copper Ionexchanged Zeolite Catalysts in De NOx Reaction," Appl. Catal., Vol.222, Issue.1-2, 2001 https://doi.org/10.1016/S0926-860X(01)00824-9
  5. C. Weaver, "Trap-Oxidizer Technology for Light Duty Diesel Vehicle: Status, Prospects, and Current Issues," SAE 831713, pp.1-18, 1983
  6. J. W. Park, J. H. Park and J. K. Park, "De-NOx Characteristics for Pt/${\gamma}$-Alumina/Codierite Foam Filter of Beads Shape," J. Korean Society For Atmospheric Environment, Vol.23, No.3, pp. 277-285, 2007 https://doi.org/10.5572/KOSAE.2007.23.3.277
  7. J. K. Park and J. S. Lee, "Preparation of Porous Cordierite using Gelcasting Method and Its Feasibility as a Filter," J. Porous Mater., Vol.9, pp. 203-210, 2003 https://doi.org/10.1023/A:1020939018359
  8. J. S. Lee and J. K. Park, J. K., "Processing of Porous Ceramic Spheres by Pseudo-doubleemulsion Method," Ceram. Int., Vol.29, pp. 271-278, 2003 https://doi.org/10.1016/S0272-8842(02)00115-3
  9. J. K. Park, J. H. Park, J. W. Park, H. S. Kim and Y. I. Jeong, "Preparation and Characterization of Porous Cordierite Pellets and Use as a Diesel Particulate Filter," Separation and Purification Technology, Vol.55, pp.321-326, 2007 https://doi.org/10.1016/j.seppur.2006.11.009
  10. J. H. Baik, S. D. Yim, I. S. Nam, Y. S. Mok, J. H. Lee, B. K. Cho and S. H. Oh, "Modeling of Monolith Reactor Washcoated with Cu-ZSM5 Catalyst for Removing NO from Diesel Engine by Urea," Ind. Eng. Chem. Res., Vol.45, pp. 5258-5267, 2006 https://doi.org/10.1021/ie060199+