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Method for generating a highly reactive plasma for exhaust gas aftertreatment and enhanced catalyst reactivity

United States Patent

February 20, 2001
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method for non-thermal plasma aftertreatment of exhaust gases the method comprising the steps of providing short risetime (about 40 ps), high frequency (about 5G hz), high power bursts of low-duty factor microwaves sufficient to generate a dielectric barrier discharge and passing a gas to treated through the discharge so as to cause dissociative reduction of the exhaust gases. The invention also includes a reactor for generating the non-thermal plasma.
Whealton; John H. (Oak Ridge, TN), Hanson; Gregory R. (Clinton, TN), Storey; John M. (Oak Ridge, TN), Raridon; Richard J. (Oak Ridge, TN), Armfield; Jeffrey S. (Upsilanti, MI), Bigelow; Timothy S. (Knoxville, TN), Graves; Ronald L. (Knoxville, TN)
The United States of America as represented by the Department of Energy (Washington, DC)
09/ 359,746
July 23, 1999
GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant the terms of Department of Energy contract number DE-AC05-96OR22464.