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Rapid Thermal Response Catalyst for Treatment of Automotive Exhaust

Published online by Cambridge University Press:  10 February 2011

Robert N. Carter ,
Subir Roychoudhury ,
George Muench ,
Hasan Karim  and
William Pfefferle
Robert N. Carter
Affiliation:
Precision Combustion, Inc., 25 Science Park, Box 24, New Haven, CT 06511, USA
Subir Roychoudhury
Affiliation:
Precision Combustion, Inc., 25 Science Park, Box 24, New Haven, CT 06511, USA
George Muench
Affiliation:
Precision Combustion, Inc., 25 Science Park, Box 24, New Haven, CT 06511, USA
Hasan Karim
Affiliation:
Precision Combustion, Inc., 25 Science Park, Box 24, New Haven, CT 06511, USA
William Pfefferle
Affiliation:
Precision Combustion, Inc., 25 Science Park, Box 24, New Haven, CT 06511, USA
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Abstract

To meet the increasingly strict automobile emissions requirements for conventional vehicles, considerable improvements in catalyst technology are required. It is now recognized that a primary challenge in meeting the ultra-low emissions vehicle standards (ULEV) for automobiles is in reducing cold-start emissions, and this generally requires a catalytic converter that has a rapid temperature response. Conventional converters (typically made from ceramic or metal monoliths) have a relatively slow temperature response due to their high thermal mass and limited heat transfer characteristics. We present details of a novel catalyst technology (Microlith™) that offers considerable advantages for this application because of greatly enhanced heat and mass transfer characteristics. Results of performance tests are also presented that demonstrate this catalyst's effectiveness. The effects of thermal aging on microstructure and catalyst performance are also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 273
Copyright
Copyright © Materials Research Society 1997

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References

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