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Catalytic Characteristic and Application Performance of Catalyzed DPFs Coated with Various Content of Precious Metal in China
Technical Paper
2017-01-2379
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recent toxicological and epidemiologic studies have shown that diesel emissions have been a significant toxic air contaminant. Catalyzed DPF (CDPF) not only significantly reduces the PM mass emissions (>90%), but also further promotes carrier self-regeneration and oxidize more harmful gaseous pollutants by the catalyst coated on the carrier. However, some ultrafine particles and potentially harmful gaseous pollutants, such as VOCs species, originally emitted in the vapor-phase at high plume temperature, may penetrate through the CDPF filter. Furthermore, the components and content of catalyst coated on the CDPF could influence the physicochemical properties and toxicity intensity of those escaping ultrafine particles and gaseous pollutants. In this work, (1) we investigated the influence of precious metal content as a variable parameter on the physicochemical properties and catalytic activities of the small CDPF samples. Dispersion of the precious metal on the fresh samples presented decreasing tendency, with the precious metal content increasing. While the higher content of precious metal showed inhibitory effect on lattice contraction and sintering. The sample with medium content precious metal can maintain higher Pt ratio in high oxidation state and better oxygen storage capacity. As the precious metal content increasing, the aged samples had stronger degradation resistance performance on CO and NO2. The sample coated with medium content had better activity and degradation resistance for C3H8. (2) Effects of full-scale CDPFs (CDPF-15, CDPF-25 and CDPF-35, the precious metal content were 15, 25 and 35 g/ft3) on diesel gaseous and particulate components were researched by means of diesel bus chassis dynamometer. For CO and NO2, CDPF-25 showed higher activity and selectivity, while it presented slightly poor selectivity to THC. CDPF-35 exhibited best activity for THC and lower activity for CO and NO2 inversely. As for VOCs, the CDPFs exhibited increasing removal efficiency for alkane, oxygenated chemicals and PAHs, 50%~70%. The precious metal content could influence its selectivity to those VOCs in real diesel emissions. As for OC/EC, there were obvious differences for the OC removal efficiency by various content sample while only slight difference for the EC removal efficiency. On removal efficiency for particle-phase PAHs, the PAHs from diesel vehicle were reduced by 91.1%, 93.1% and 91.1% by CDPF-15, CDPF-25 and CDPF-35, respectively. CDPF-25 showed higher removal efficiency for 4-, 5- and 6-ring PAHs, CDPF-15 showed higher removal efficiency for low-ring PAHs. The CDPFs could obviously reduce the toxicity equivalent of different benzene ring PAHs.
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Feng, Q., Shen, S., Li, M., Li, Z. et al., "Catalytic Characteristic and Application Performance of Catalyzed DPFs Coated with Various Content of Precious Metal in China," SAE Technical Paper 2017-01-2379, 2017, https://doi.org/10.4271/2017-01-2379.Data Sets - Support Documents
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References
- Herner , D. , Hu , S. , Robertson , W. et al. Effect of Advanced Aftertreatment for PM and NOx Control on Heavy-Duty Diesel Truck Emissions Environmental Science & Technology 43 2009 5928 5933 10.1021/es9008294
- Michael , A. , Michael J. , Christopher A. et al. Size and Composition Distributions of Particulate Matter Emissions: Part 2-Heavy-Duty Diesel Vehicles Journal of the Air & Waste Management Association 57 2007 1429 1438 10.3155/1047-3289.57.12.1429
- Lu , T. , Huang , Z. , Cheung , C. et al. Size distribution of EC, OC and particle-phase PAHs emissions from a diesel engine fueled with three fuels Science of the Total Environment 438 2012 33 41 10.1016/j.scitotenv.2012.08.026
- Ning , Z. , Wubulihairen , M. and Yang , F. PM, NOx and butane emissions from on-road vehicle fleets in Hong Kong and their implications on emission control policy Atmospheric Environment 61 2012 265 274 10.1016/j.atmosenv.2012.07.047
- Andrew , A. , Albert , A. , Presto , C. et al. Gas-Particle Partitioning of Primary Organic Aerosol Emissions: (2) Diesel Vehicles Environmental Science & Technology 47 2013 8288 8296 10.1021/es400782j
- Andrew , A. , Ngoc , T. , Albert , A. et al. Gas- and Particle-phase Primary Emissions from In-use, On-road Gasoline and Diesel Vehicles Atmospheric Environment 88 2014 247 260 10.1016/j.atmosenv.2014.01.046
- Hu , S. , Herner , J. , Robertson , W. et al. Emissions of Polycyclic Aromatic Hydrocarbons (PAHs) and Nitro-PAHs from Heavy-duty Diesel Vehicles with DPF and SCR Journal of the Air & Waste Management Association 63 2013 984 996 10.1080/10962247.2013.795202
- Biswas , S. , Hu , S. , Verma , V. et al. Physical Properties of Particulate Matter (PM) from Late Model Heavy-duty Diesel Vehicles Operating with Advanced PM and NOx Emission Control Technologies Atmospheric Environment 42 2008 5622 5634 10.1016/j.atmosenv.2008.03.007
- Hu , S. , Herner , J. , Shafer , M. et al. Metal Emitted from Heavy-duty Diesel Vehicles Equipped with Advanced PM and NOx Emission Controls Atmospheric Environment 43 2009 2950 2959 10.1016/j.atmosenv.2009.02.052
- Schejbal , M. , Štepánek , J. , Marek , M. et al. Modelling of Soot oxidation by NO2 in Various Types of Diesel Particulate Filters Fuel 89 2010 2365 2375 10.1016/j.fuel.2010.04.018
- He , C. , Li , J. , Ma , Z. et al. High NO2/NOx Emissions Downstream of The Catalytic Diesel Particulate Filter: An Influencing Factor Study Journal of Envirmental Sciences 35 2015 55 61 10.1016/j.atmosenv.2009.02.052
- Goto , H. , Komata , K. , and Minami , S. Impact of Pd-Rh Interaction on the Performance of Three-Way Catalysts SAE Technical Paper 2014-01-1503 2014 10.4271/2014-01-1503
- Yin , A. , Qu , J. , Guo , X. The Influence of B-doping on The Catalytic Performance of Cu/HMS Catalyst for The Hydrogenation of Dimethyloxalate Applied Catalysis A: General 400 2011 39 47 10.1016/j.apcata.2011.04.011
- Fan , X. , Wang , F. , Zhu , T. et al. Effects of Ce on Catalytic Combustion of Methane over Pd-Pt/Al2O3 Catalyst Journal of Environmental Sciences 24 2012 507 511 10.1016/S1001-0742(11)60798-5
- Sharma , H. , Pahalagedara , L. , Joshi , A. et al. Experimental Study of Carbon Black and Diesel Engine Soot Oxidation Kinetics Using Thermogravimetric Analysis Energy Fuels 26 2012 5613 5625 10.1021/ef3009025
- Lowry , S. , Roberts , J. , Lindner , J. , and Munday , D. The Measurement of Exhaust Emissions from Oxygenated Fuel Blends by Fourier Transform Infrared Spectroscopy SAE Technical Paper 950220 1995 10.4271/950220
- Ishizawa , Y. , Matsuishi , M. , Abe , Y. , Emori , G. et al. Study of Supercharged Gasoline HCCI Combustion by Using Spectroscopic Measurements and FT-IR Exhaust Gas Analysis SAE Technical Paper 2014-32-0004 2014 10.4271/2014-32-0004
- Ahari , H. , Zammit , M. , Cattani , L. , Jacques , J. et al. Cause and Effect of Reversible Deactivation of Diesel Oxidation Catalysts SAE Technical Paper 2014-01-1518 2014 10.4271/2014-01-1518
- Clerc , J. Catalytic Diesel Exhaust Aftertreatment Applied Catalysis B: Environmental 10 1996 99 l15 10.1016/0926-3373(96)00026-4
- Wang , H. , Wang , Q. , Chen , J. et al. Do Vehicular Emissions Dominate The Source of C6-C8 Aromatics in The Megacity Shanghai of Eastern China? Journal of Envirmental Sciences 27 2015 290 297 10.1016/j.jes.2014.05.033
- Wang , J. , Jin , L. , Gao , J. et al. Investigation of Speciated VOC in Gasoline Vehicular Exhaust under ECE and EUDC Test Cycles Science of the Total Environment 445-446 2013 110 116 10.1016/j.scitotenv.2012.12.044
- Alkurdi , F. , Karabet , F. , Dimashk , M. Characterization, Concentrations and Emission Rates of Polycyclic Aromatic Hydrocarbons in The Exhaust Emissions from In-service Vehicles in Damascus Atmospheric Research 120-121 2013 68 77 10.1016/j.atmosres.2012.08.003
- Oanh , N. , Thiansathit , W. , Bond , T. et al. Compositional Characterization of PM2.5 Emitted from In-use Diesel Vehicles Atmospheric Environment 44 2010 15 22 10.1016/j.atmosenv.2009.10.005
- Tang , S. , Frank , B. , Lanni , T. et al. Unregulated Emissions from a Heavy-Duty Diesel Engine with Various Fuels and Emission Control Systems Environmental Science & Technology 41 2007 5037 5043 10.1021/es0622249
- Guo , F. , Ma , H. , Yang , X. et al. Effect of Lattice Parameters of Zr1-xMxWMoO8-x/2 and Zr1-xMxW2O8-x/2 Solid Solutions on Lattice Distortion Chinese Journal of Inorganic Chemistry 27 2011 2061 2065
- Aryan , D. , Price , K. , and Pauly , T. Four Season Field Aging for SCR on DPF (SDPF) on a Light Heavy Duty Application SAE Technical Paper 2016-01-0929 2016 10.4271/2016-01-0929
- Yang , Z. , Chen , Y. , Zhao , M. et al. Preparation and Properties of Pt/ZrxTi1-xO2 Catalysts with Low-Level SO2 Oxidation Activity for Diesel Oxidation Chinese Journal of Catalysis 33 2012 819 826 10.3724/SP.J.1088.2012.11108
- Cui , Y. , Fang , R. , Shang , H. et al. Effect of Support Materials on Property and Catalytic Performance of Pd-Only Three-Way Catalyst Chinese Journal of Inorganic Chemistry 31 2015 989 1002