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

Patent · 31 December 2000

OSTI ID:873562

Whealton, John H ^[1]; Hanson, Gregory R ^[2]; Storey, John M ^[1]; Raridon, Richard J ^[1]; Armfield, Jeffrey S ^[3]; Bigelow, Timothy S ^[4]; Graves, Ronald L ^[4]

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1. Oak Ridge, TN
2. Clinton, TN
3. Upsilanti, MI
4. Knoxville, TN

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.

• Research Organization: LOCKHEED MARTIN ENERGY RES COR
• DOE Contract Number: AC05-96OR22464
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 6190507
• OSTI ID: 873562
• Country of Publication: United States
• Language: English

Related Subjects

/204/422/
40
5g
active plasma
aftertreatment
barrier
barrier discharge
bursts
catalyst
comprising
dielectric
dielectric barrier
discharge
dissociative
duty factor
enhanced
enhanced catalyst
exhaust
exhaust gas
exhaust gases
factor
frequency
gas
gases
generate
generating
highly
highly reactive
hz
low-duty
method
method comprising
microwaves
non-thermal
non-thermal plasma
passing
plasma
power
providing
reactive
reactive plasma
reactivity
reactor
reduction
risetime
steps
sufficient
treated