Browse > Article

A Study on the Remanufacturing Effect of Aged Three-Way Catalysts  

Kwak, Seung-Min (Department of chemical Engineering, Hanseo University)
Lim, Jong-Sun (Research Institute of Catalyst Technology, Hanseo University)
Kim, Tae-Won (Research Institute of Catalyst Technology, Hanseo University)
Park, Hae-Kyoung (Research Institute of Catalyst Technology, Hanseo University)
Publication Information
Applied Chemistry for Engineering / v.20, no.4, 2009 , pp. 430-436 More about this Journal
Abstract
Deactivated three-way catalysts which had been exposed to gasoline engine exhaust for a long time were remanufactured by ultra sonic cleaning with distilled water, sulfuric acid solution and impregnation with precious metals (Pt, Pd, Rh). The catalytic properties as well as conversion reactivity of CO, THC and NOx about fresh, aged and remanufactured catalysts were examined. Most of the pollutants deposited on the aged three-way catalysts were removed in the remanufacturing process of those catalysts. At the same time a little amount of precious metals like Pt and Pd were removed in the remanufacturing process. Under the experimental condition used in this study, in the case of the remanufactured catalysts with impregnation of precious metals, the catalytic activities were recovered to almost the same level, or higher level of that of the fresh catalyst.
Keywords
Three-way catalyst; remanufacturing; precious metals; catalytic activity; conversion;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 B. H. Jang, C. H. Kim, Y. S. Oh, and H. E. Yie, HWAHAK KONGHAK, 39, 131 (2001)
2 F. G. Dwyer, Catalysis Reviews, Marcel Dekker, New York, 261 (1972)
3 Z. Hu, F. M. Allen, C. Z. Wan, R. M. Heck, J. J. Steger, R. E. Lakis, and C. E. Lynan, J. Catal, 174, 13 (1998)   DOI   ScienceOn
4 C. H. Bartholomew, Appl. Catal. A; General, 212, 17 (2001)   DOI   ScienceOn
5 R. M. Heck, R. J. Farrauto, and S. T. Gulati, Catalytic Air Pollution Control, Engelhard Corp, 73 (1995)
6 K. L. Mowery and M. S. Graboski, T. R. Ohno, and R. L. McCormick, Appl. Catal. B; Environmental, 21, 157 (1999)   DOI   ScienceOn
7 G. M. Fernandez and A. A. Martinez, Int. J. Mol. Sci., 2, 251 (2001)   DOI
8 J. E. Kubsh, J. S. Rieck, and N. D. Spencer, Cerium Oxide Stabilization: Physical Property and Three-way Activity Consideration, Catalysis and Automotive Pollution Control Ⅱ, Elsevier, Amsterdam, 125 (1991)
9 B. S. Shin, S. S. Kim, G. W. Lee, M. G. Jung, J. H. Bae, and S. J. Choung, J. KOSAE, 15, 667 (1999)
10 J. A. Moulijin, A. E. van Diepen, and F. Kapteijin, Appl. Catal. A; General, 212, 3 (2001)   DOI   ScienceOn
11 B. H. Engeler, E. Koberstein, and H. Volker, Three-way Catalyst Performance Using Minimized Rhodium, SAE872097 (1987)
12 B. H. Engler, G. T. Garr, and E. S. Lox, Johnson Matthey Automotive Catalyst Development to Meet Future Emission Standard, Dagussa AG, Ordeg Corp (1991)
13 A. M. Arias, M. F. Garcia, A. B. Hungria, and A. I. Juez, J. Catal., 204, 238 (2001)   DOI   ScienceOn
14 B. J. Cooper, W. D. J. Evans, and B. Harrison, Catalysis and Automotive Pollution Control, Elsevier, New York, 117 (1987)
15 D. E. Angove and N. W. Cant, Appl. Catal. A; General, 194, 27 (2000)   DOI   ScienceOn