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Automotive Applications of Sol-Gel Processed Materials: Novel, Low Power Consumption, Electrically Heatable Catalyst Devices

Published online by Cambridge University Press:  10 February 2011

S. R. Nakouzi ,
J. R. McBride ,
K. E. Nietering ,
J. H. Visser ,
A. A. Adamczyk Jr  and
C. K. Narula
S. R. Nakouzi
Affiliation:
Chemistry Department, Ford Motor Co., P.O. Box 2053, MD 3083, Dearborn, MI 48121
J. R. McBride
Affiliation:
Physics Department, Ford Motor Co., P.O. Box 2053, MD 3028, Dearborn, MI 48121
K. E. Nietering
Affiliation:
Physics Department, Ford Motor Co., P.O. Box 2053, MD 3028, Dearborn, MI 48121
J. H. Visser
Affiliation:
Physics Department, Ford Motor Co., P.O. Box 2053, MD 3028, Dearborn, MI 48121
A. A. Adamczyk Jr
Affiliation:
Chemical Engineering Department, P.O. Box 2053, MD 3179, Dearborn, MI 48121
C. K. Narula
Affiliation:
Chemistry Department, Ford Motor Co., P.O. Box 2053, MD 3083, Dearborn, MI 48121
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Abstract

Exhaust gas heat is the primary source of warming in a conventional automotive exhaust catalyst. It typically becomes operational within minutes after the initial start-up of an engine, when it attains temperatures greater than approximately 350°C. However, around 70% of the total hydrocarbon and carbon monoxide (CO) emissions of a modern gasoline powered vehicle, under a normal driving cycle, are released during this period of cold-start. One of the strategies suggested to treat the pollutants during the first minute after initial start-up involves electrically heating the catalyst. However, devices developed for this purpose are power intensive, can require a second battery and can reduce fuel economy. The increased weight, in turn, results in increased pollution. Here we describe a low power consumption prototype which contains a conducting layer beneath the washcoat. The prototype [4 cm2] was tested at a gas flow rate of 100 seem and required less than 5 Watts to attain temperatures greater than 350°C in less than 10 seconds. The prototype was tested in a flow reactor and found to rapidly heat up to light-off temperatures where the conversion of the hydrocarbons and CO takes place. We also summarize progress made in our laboratory in the fabrication of a test device employing sol-gel processed metal oxide films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 283
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1. Heck, R.M., Farrauto, R.J., Catalytic Air Pollution Control: Commercial Technologies; Van Nostrana Reinhold: New York, 1995.Google Scholar
2. Narula, C.K., Allison, J.E., Bauer, D., Gandhi, H.S., Chem. Mater., 1996, 8, 984.Google Scholar
3. Whittenberger, W.A.; Kubsh, J.E.; SAE 910613, 1991.Google Scholar
Hurley, R.G.; Hansen, L.A.; LaCourse, D.L.; Watkins, W.L.H.; Gandhi, H.S.; Whittenberger, W.A.; SAE 900504, 1990.Google Scholar
Heimrich, M.J.; Albu, S.; Osborne, J.; SAE 902115, 1990.Google Scholar
4. Hurley, R.G.; Guttridge, D.L.; Hansen, L.A.; Pawlowicz, R.J.; Smolinski, J.M.; Gandhi, H.S.; SAE 912384, 1991.Google Scholar
5. Mizuno, H.; Abe, F.; Hashimoto, S.; Kondo, T.; SAE 940466, 1994.Google Scholar
6. Häfele, E.; Säger, M.; WO 92/17692, 1992.Google Scholar
7. Burggraaf, A.J.; Keizer, K.; van Hassel, B.A.; Solid State Ionics, 1989, 32/33, 771.Google Scholar
8. LaCourse, W.C.; Kim, S.; Science of Ceramic Processing, eds. Hench, L.L.; Ulrich, D.R., Wiley, New York, 1986.Google Scholar
9. Narula, C.K.; Visser, J.H.; Adamczyk, A.A.; US 5,536,857, 1996.Google Scholar
10. Arfsten, N.J.; J. Non-Cryst. Solids, 1984, 63, 243.Google Scholar
Vossen, J.L., J. Phys. Thin Films, 1977, 9, 1.Google Scholar
Nakahara, T.; Takahata, K.; Matsuura, S.; Proc. Electrochem. Soc, 1987, 87–89, 55.Google Scholar
11. Kane, J.; Schweizer, H.P.; Kern, W.; J. Electrochem. Soc, 1975, 122, 1144.Google Scholar
Marton, J.P.; Lepic, D.A.; J. Electrochem. Soc., 1976, 123, 234.Google Scholar
Rnadhawa, H.S.; Mathews, W.D.; Bunshah, R.F.; Thin Solid Films, 1981, 83, 267.Google Scholar
Lehman, H.W.; Widner, R.; Thin Solid Films, 1975, 27, 359.Google Scholar
Muranaka, S.; Bando, Y.; Takada, T.; Thin Solid Films, 1981, 86, 11.Google Scholar
12. Hampden-Smith, M.J.; Wark, T.A.; Coord. Chem. Rev.; 1992, 112, 81 Google Scholar
13. Chandler, C.D.; Falion, G.D.; Koplick, A.J.; West, B.O.; Aut. J. Chem.; 1987, 40, 1427.Google Scholar
14. Narula, C.K.; Watkins, W.L.H.; Shelef, M.; US 5,210,062, 1993.Google Scholar
15. Pakko, J.D., Adamczyk, A.A. Jr, Siegl, W.O., Pawlowicz, R.J., SAE Technical Paper Series, #941999, Feb. 1994.Google Scholar