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Deposition of Catalysts onto Vehicle Heat Exchangers via Thermal and Kinetic Spray Processes for Direct Ozone Reduction
Technical Paper
2003-01-3079
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The California Air Resources Board (CARB) has recently adopted direct ozone reduction (DOR) technologies as an emission control alternative. The application of DOR technologies on motor vehicles allows an automaker to receive non-methane organic gas (NMOG) emission credits, which may be applied to offset vehicle tailpipe emissions or evaporative emissions from fuel tanks. Additionally, DOR technologies can enhance the “green image” of an automaker. DOR devices involve catalyst coatings on radiators or other surfaces in such a way that the amount of ozone in the ambient air passing through such surfaces is reduced. The deposition of catalysts onto substrates (e.g. radiator surfaces) is traditionally accomplished using a slurry process, which often involves multiple steps in coating formation. In this work, deposition of catalytic coatings onto radiator surfaces via kinetic and thermal spray processes is explored. We demonstrate that catalytic materials could be successfully deposited directly onto radiator surfaces using a thermal spray process. Coating characterization studies show that the composition of catalytically active coating surfaces is MnOx (x between 1.5 to 2) when metal Mn powders are used as a feedstock. Our results show that ozone removal by the thermally sprayed Mn-based catalysts on radiators is efficient (about 70-80% at the radiator's fully warmed-up temperature of about 82 °C) and is comparable to or better than commercially available sample catalysts prepared using slurry-based deposition techniques. The thermal spray process is relatively rapid, involves only a single step in coating formation, and potentially is a low cost alternative to the current slurry technology.
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Authors
Topic
Citation
Wu, M., Zhao, Z., Gillispie, B., Smith, J. et al., "Deposition of Catalysts onto Vehicle Heat Exchangers via Thermal and Kinetic Spray Processes for Direct Ozone Reduction," SAE Technical Paper 2003-01-3079, 2003, https://doi.org/10.4271/2003-01-3079.Also In
Emissions: Advanced Catalyst and Substrates, Measurement and Testing, Diesel Gaseous Emissions
Number: SP-1801; Published: 2003-10-31
Number: SP-1801; Published: 2003-10-31
References
- California Air Recourses Board “Certification Procedures for Direct Ozone Reduction (DOR) Technologies” http://www.arb.ca.gov/msprog/macs/mac9906/mac9906a.pdf
- Hoke J. Anderson D. Heck R. Poles T. Steger J. “New approach for ambient pollution reduction - PremAir catalyst systems” SAE paper 960800
- Poles T. Anderson D. Durilla M. Heck R. Hoke J. Ober R. Rudy W. “PreAir catalyst systems: a new approach to clean air” 1996 National Petroleum Refiners Association Annual Meeting March 17 19 1996 San Antonio, Texas
- Rudy W. Ober R. Durilla M. Anderson D. Hoke J. Heck R. “New approach for ambient pollution reduction-PremAir catalyst systems field experience” 1996 Air and Waste Management Association June 23 28 1996 Nashville, Tennessee
- Engelhard
- Greger L. Wirmark G. Gottberg I. Heck R. M. Hoke J. B. Poles T. C. Rudy W. M. “Assembly, method, and motor vehicle for cleaning ambient air in the vicinity of an internal combustion engine” April 10 2001
- Dettling J. C. Hoke J. B. “Method of catalytically treating the atmosphere and heat exchange devices produced thereby” December 7 1999
- Hoke J. B. Heck R. M. Allen F. M. “Method and Device for Cleaning the Atmosphere” February 20 2001
- Hoke J. B. Novak J. R. Steger J. J. Poles T. C. Michael-Quick L. Heck R. M. Hu Z. Durilla M. “Method and apparatus for treating the atmosphere” April 10 2001
- Smith J. R. Sultan M. F. Wu M. C. Zhao Z. B. “Direct application of catalysts to substrates for treatment of the atmosphere” June 2002
- Smith J. R. Sultan M. F. Wu M. C. Zhao Z. B. Gillispie Bryan “Direct application of catalysts to substrates via a thermal spray process for treatment of the atmosphere” August 2002
- Takahashi K. Kohei U. Journal of Environmental Engineering 128 2002 286
- Campbell L. E. Sanders M. W. “Pollutant removal from air in closed space” September 19 2000
- Wu M. C. Kelly N. A. “Clean-air catalyst system for on-road applications: I evaluation of potential catalysts” Appl. Catalysis B: Environmental 18 1998 79 91
- Wu M. C. Kelly N. A. “Clean-air catalyst system for on-road applications: II mechanistic studies of pollutant removal” Appl. Catalysis B: Environmental 18 1998 93 104
- VanSteenkiste T. H. Smith J. R. Teets R. E. Moleski J. J. Gorkiewicz D. W. Tison R. P. Marantz D. R. Kowalsky K. A. Riggs W. L. Zajchowski P. H. Pilsner B. McCune R. C. Barnett K. J. Surface and Coating Technology 111 1999 62
- Van Steenkiste T. H. Smith J. R. Teets R. E. Surface and Coating Technology 154 2002 237
- Sultan M. Van Steenkiste T. Smith J. R. Wu M. C. Zhao Z.
- Fleisch T. H. J. of Applications of Surface Science 10 1982 51
- Cotton F. A. Wilkinson G. Gaus P. L. Basic Inorganic Chemistry J, Wiley and Sons, Inc. Chichester 1995 561 564
- Zaki M. Z. Hasan M. A. Pasupulety L. Kumari K. Thermochimica Acta 311 1998 97
- Oku M. Wagatsuma K. Konishi T. J. Electron Spectroscopy and Related Phenomena 98 99 1999 277