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Products and Intermediates in Plasma-Catalyst Treatment of Simulated Diesel Exhaust
Technical Paper
2001-01-3512
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Spring Fuels & Lubricants Meeting & Exhibition
SAE International Fall Fuels & Lubricants Meeting & Exhibition
Language:
English
Abstract
A simulated diesel exhaust is treated with a nonthermal plasma discharge under steady state conditions. The plasma effluent is then passed through a sodium zeolite-Y (NaY) catalyst followed by a platinum oxidation catalyst. Detailed FTIR measurements of gas composition are taken before, between, and after the treatment stages.
The plasma discharge causes oxidation of NO primarily to NO2, with methyl nitrate and nitric acid byproducts. At the same time, HC is partially oxidized, creating species such as formaldehyde, acetaldehyde, CO and other partial oxidation products.
When this mixture passes over the NaY catalyst, part of the NOx is reduced to N2, with the remainder primarily in the form of NO. Methyl nitrate decomposes to form methanol and NOx, and nitric acid is consumed. There is little HC conversion on this catalyst. Small quantities of HCN and N2O are formed.
When the mixture then passes over the platinum catalyst, further NOx conversion occurs. N2O increases, and the remaining NOx is a mix of NO and NO2. HCN, acetaldehyde, formaldehyde and other HCs are removed.
Thermal cycling tests with barium zeolite-Y (BaY)-alumina-Pt catalysts show significant storage/release of various compounds. Net NOx conversion reaches 60-80% over a wide temperature range, albeit at rather low space velocities.
Citation
Hoard, J. and Panov, A., "Products and Intermediates in Plasma-Catalyst Treatment of Simulated Diesel Exhaust," SAE Technical Paper 2001-01-3512, 2001, https://doi.org/10.4271/2001-01-3512.Also In
References
- Plasma Exhaust Aftertreatment SAE SP-1395 Balmer M. Lou Fisher Galen Hoard John Society of Automotive Engineers 1998
- Non-Thermal Plasma for Exhaust Emission Control SAE SP-1483 Balmer M. Lou Fisher Galen Hoard John Society of Automotive Engineers 1999
- Non-Thermal Plasma SAE SP-1566 Balmer M. Lou Fisher Galen Hoard John Society of Automotive Engineers 2000
- Hoard John Balmer M. Lou “Analysis of Plasma-Catalysis for Diesel NOx Remediation” SAE paper 982429 1998
- Balmer M. Lou Tonkyn Russ Yoon Steven Kolwaite Ana Barlow Steve Maupin Gary Hoard John “NOx destruction Behavior of Select Materials When Combined with a Non-Thermal Plasma” SAE paper 1999-01-3640
- Gabele Peter A. “Investigation of Analyzer Problems in the Measurement NOx from Methanol Vehicles” EPA report PB89-124374 1988
- Hilliard John Wheeler Richard “Nitrogen Dioxide in Engine Exhaust” SAE paper 790691 1979
- Hoard John Wallington Timothy J. Bretz Richard L. Malkin Alexander “Products and Intermediates in Plasma-Catalysis of Simulated Diesel Exhaust” 3 rd International Symposium on Nonthermal Plasma Technology for Pollution Control Cheju Island, Korea April 2001
- Tonkyn Russell Yoon Steven Barlow S.E. Panov Alexander Kolwaite Ana Balmer M. Lou “Lean NOx Reduction in Two Stages: Non-thermal Plasma Followed by Heterogeneous Catalysis” SAE paper 2000-01-2896
- Shin Hyun-Ho Yoon Woon-Sup “Effect of Hydrocarbons on the Promotion of NO-NO 2 Conversion in Non Thermal Plasma DeNOx Treatment” SAE paper 2000-01-2969
- Dorai Rajesh Kushner Mark “Effect of Propene on the Remediation of NOx from Engine Exhausts” SAE paper 1999-01-3683
- Dorai Rajesh Kushner Mark “Consequences of Propene and Propane on Plasma Remediation of NOx” Journal of Applied Physics 88 6 15 Sept. 2000
- NIOSH Pocket Guide to Chemical Hazards U.S. Department of Health and Human Services, CDC June 1997
- McLarnon Christopher Penetrante Bernie “Effect of Gas Composition on the Conversion Chemistry in a Plasma” SAE paper 982433 1998
- Sultana Asima Loenders Raf Monticelli Orietta Kirshhock Christine Jacobs Pierre Martens Johan “DeNOx of Exhaust Gas from Lean-Burn Engines Through Reversible Adsorption of N 2 O 3 in Alkali Metal Cation Exchanged Faujasite-Type Zeolites” Angew. Chem. Int. Ed. 2000 39 16 2934 2937
- Montecelli O. Loenders R. Jacobs P.A. Martens J.A. “NOx Removal from Exhaust Gas from Lean Burn Internal Combustion Engines Through Adsorption on FAU Type Zeolites Cation Exchanged with Alkali Metals and Alkaline Earth Metals” Applied Catalysis B: Environmental 21 1999 215 220
- Fisher Galen DiMaggio Craig Yezerets Aleksey Kung Mayfair Kung Harold Baskaranm Suresh Fryw John Smith Monty Herling Darrel LeBarge William Kupe Joachim “Mechanistic Studies of the Catalytic Chemistry of NOx in Laboratory Plasma-Catalyst Ractors” SAE paper 2000-01-2965
- Hoard, John Wallington, Tim Ball, James Hurley, Michael Wodzisz, Ken Balmer M. Lou “Role of Methyl Nitrate in Plasma Exhaust Treatment” Environmental Science and Technology 33 3427 3431 October 1999