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Dergiler / Turkish Journal of Chemistry / 2021 / Cilt: 45 - Sayı: 3

Investigation of performances of commercial diesel oxidation catalysts for $CO,C_3H_6$, andNO oxidation

Deniz ŞANLI YILDIZ
Hande GÜNEŞ
Selmi Erim BOZBAĞ
Can ERKEY
Hüseyin Barkın ÖZENER
Gökhan HİSAR
Sayfa
673–682
Yayın Tarihi
2022-11-01
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The optimum Pt:Pd ratio for individual and cooxidations of $CO,C_3H_6$ , and NO was found to be Pt:Pd = 3:1 (w/w) in the range of experimental conditions investigated in this study.

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Amaç & Hipotez:Four commercial monolithic diesel oxidation catalysts (DOCs) with two different platinum group metal (PGM) loadings and Pt:Pd ratios of 1:0, 2:1, 3:1 (w/w) were investigated systematically for $CO,C_3H_6$ , and NO oxidation, C$CO,C_3H_6$ co-oxidation, and $CO,C_3H_6$ -NO oxidation reactions via transient activity measurements in a simulated diesel engine exhaust environment.
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Temel Bulgular & Veri:As PGM loading increased, light-off curves shifted to lower temperatures for individual and co-oxidation reactions of CO and $CO,C_3H_6$ .
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Sonuç & Katkı:The optimum Pt:Pd ratio for individual and cooxidations of $CO,C_3H_6$ , and NO was found to be Pt:Pd = 3:1 (w/w) in the range of experimental conditions investigated in this study.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

Four commercial monolithic diesel oxidation catalysts (DOCs) with two different platinum group metal (PGM) loadings and Pt:Pd ratios of 1:0, 2:1, 3:1 (w/w) were investigated systematically for $CO,C_3H_6$ , and NO oxidation, C$CO,C_3H_6$ co-oxidation, and $CO,C_3H_6$ -NO oxidation reactions via transient activity measurements in a simulated diesel engine exhaust environment. As PGM loading increased, light-off curves shifted to lower temperatures for individual and co-oxidation reactions of CO and $CO,C_3H_6$ . CO and$CO,C_3H_6$ were observed to inhibit the oxidation of themselves and each other. Addition of Pd to Pt was found to enhance CO and $CO,C_3H_6$ oxidation performance of the catalysts while the presence and amount of Pd was found to increase the extent of self-inhibition of NO oxidation. NO inhibited CO and $CO,C_3H_6$oxidation reactions while NO oxidation performance was enhanced in the presence of CO and C3 H6 probably due to the occurrence of reduced Pt and Pd sites during CO and $CO,C_3H_6$ oxidations. The optimum Pt:Pd ratio for individual and cooxidations of $CO,C_3H_6$ , and NO was found to be Pt:Pd = 3:1 (w/w) in the range of experimental conditions investigated in this study.

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Bu Makaleye Atıf Yap

YILDIZ, D. Ş., GÜNEŞ, H., BOZBAĞ, S. E., ERKEY, C., ÖZENER, H. B., HİSAR, G. (2022). Investigation of performances of commercial diesel oxidation catalysts for $CO,C_3H_6$, andNO oxidation. Turkish Journal of Chemistry, Cilt: 45 - Sayı: 3, 673–682. https://ajindex.com/articles/602274

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Kaynakça (11)

  1. Russell A, Epling WS. Diesel oxidation catalysts. Catalysis Reviews 2011
  2. doi: 10.1080/01614940.2011.596429 2. Burch R. Knowledge and know-how in emission control for mobile applications. Catalysis Reviews 2004
  3. 46 (3-4): 271-333. doi: 10.1081/ CR-200036718 3. Xue E, Seshan K, Ross JRH. Roles of supports, Pt loading and Pt dispersion in the oxidation of NO to $NO_2 and of SO_2 to SO-3$. AppliedCatalysis B: Environmental 1996
  4. doi: 10.1016/S0926-3373(96)00034-3 4. Hauff K, Tuttlies U, Eigenberger G, Nieken U. A global description of DOC kinetics for catalysts with different platinum loadings and aging status. Applied Catalysis B: Environmental 2010
  5. 100 (1-2): 10-18. doi: 10.1016/j.apcatb.2010.07.036 5. Hauff K, Boll W, Tischer S, Chan D, Tuttlies U et al. Macro-and microkinetic simulation of diesel oxidation catalyst: effect of aging, noble metal loading and platinum oxidation. Chem-Ing-Tech 2013
  6. 85 (5): 673-685. doi: 10.1002/cite.201200158 6. Morlang A, Neuhausen U, Klementiev KV, Schütze FW, Miehe G et al. Bimetallic Pt/Pd diesel oxidation catalysts: structural characterisation and catalytic behaviour. Applied Catalysis B: Environmental 2005
  7. doi: 10.1016/j.apcatb.2005.03.007 7. Kaneeda M, Iizuka H, Hiratsuka T, Shinotsuka N, Arai M. Improvement of thermal stability of NO oxidation $Pt/Al_2 O_3$ catalyst by addition of Pd. Applied Catalysis B: Environmental 2009
  8. doi:10.1016/j.apcatb.2009.04.011 8. Shakya BM, Sukumar B, Lopez-De Jesus YM, Markatou P. The effect of Pt:Pd ratio on heavy-diesel oxidation catalyst performance: an experimental and modeling study. SAE International Journal of Engines 2015
  9. 8 (3): 1271-1282. doi: 10.4271/2015-01-1052 9. Kim CH, Schmid M, Schmieg SJ, Tan J, Li W. The effect of Pt-Pd ratio on oxidation catalysts under simulated diesel exhaust. SAE Technical Paper 2011. doi: 10.4271/2011-01-1134 10. Hazlett MJ, Moses-Debusk M, Parks II JE, Allard LF, Epling WS. Kinetic and mechanistic study of bimetallic $Pt-Pd/Al_2 O_3$ catalysts for $COand C_3 H_6$ oxidation. Applied Catalysis B: Environmental 2017
  10. doi: 10.1016/j.apcatb.2016.09.034 11. Daneshvar K, Dadi RK, Luss D, Balakotaiah V, Kang SB et al. Experimental and modeling study of CO and hydrocarbons light-off on various $Pt-Pd/γ-Al_2 O_3$ diesel oxidation catalysts. Chemical Engineering Journal 2017
  11. doi: 10.1016/j.cej.2017.04.078 12. Kang SB, Kalamaras C, Balakotaiah V, Epling W. Zoning and trappi