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A four-way catalytic system for control of emissions from diesel engine

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Abstract

The pollution caused by diesel-fuelled vehicles has become a subject of global concern. Presently, various separate technologies such as diesel oxidation catalyst, diesel particulate filter, selective catalytic reduction and ammonia selective catalytic reduction are used to control these pollutants. The four-way catalytic (FWC) system integrates all the separate control systems into a single compact unit. FWC technique using a combination of oxidation–reduction catalysts under various strategies has been investigated to simultaneously remove CO, HC, PM and NOx emitted from diesel engines. An oxidation catalyst (La0.6K0.4CoO3) was prepared by two different methods (sol–gel and co-precipitation). The reduction catalysts: Ag/Al2O3 and Cu-ZSM5 were synthesized by impregnation and ion-exchange method, respectively. The FWC was characterized by N2-sorption, X-ray diffraction, Fourier transform spectroscopy and scanning electron microscopy. The catalytic activities of FWC containing double-layer of catalysts were evaluated in a fixed-bed-tubular-reactor. The highest catalytic activity resulted by the two-layered system of La0.6K0.4CoO3 (sol–gel) + Cu-ZSM5 showing 100% NO conversion to N2 at 415°C, maximum-temperature of soot-combustion at 410°C, complete C3H8 conversion at 450°C and 100% CO conversion at 388°C. Maximum NO conversion was maintained up to 427°C; conversion started decreasing with further increase in temperature and 75.4% conversion remained up to 450°C. The performance of double-layered-catalytic-system was as follows: La0.6K0.4CoO3(sol–gel) + Cu-ZSM5 > La0.6K0.4CoO3(sol–gel) + Ag/Al2O3 > La0.6K0.4CoO3(co-ppt) + Ag/Al2O3 > La0.6K0.4CoO3(co-ppt) + Cu-ZSM5.

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References

  1. Farrauto R J and Voss K E 1996 Monolithic diesel oxidation catalysts. Appl. Catal. B 10:29–51

    Article  Google Scholar 

  2. Gandhi H S, Graham G W and McCabe R W 2003 Automotive exhaust catalysis. J. Catal. 216: 433–442

    Article  Google Scholar 

  3. Prasad R and Bella V R 2010 Review on diesel soot emission, its effect and control. Bull. Chem. React. Eng. Catal. 5: 69–86

    Article  Google Scholar 

  4. Banús E D, Ulla M A, Miro E E and Milt V G 2013 Structured catalysts for soot combustion for diesel engines, in diesel engine-combustion. Emiss. Condit. Monit. 5: 117–142

    Google Scholar 

  5. Walker A P 2004 Controlling particulate emissions from diesel vehicles: a review. Top. Catal. 28: 165–170

    Article  Google Scholar 

  6. Guo X, Meng M, Dai F, Li Q, Zhang Z, Jiang Z, Zhang S and Huang Y 2013 NOx-assisted soot combustion over dually substituted perovskite catalysts La1–xKxCo1–yPdyO3–δ. Appl. Catal. B 142: 278–289

    Article  Google Scholar 

  7. Mishra A and Prasad R 2014 Preparation and application of perovskite catalysts for diesel soot emissions control: an overview. Catal. Rev. 56: 57–81

    Article  Google Scholar 

  8. Iwasaki M and Shinjoh H A 2010 Comparative study of “standard”, “fast” and “NO2” SCR reactions over Fe/zeolite catalyst. Appl. Catal. A 390: 71–77

    Article  Google Scholar 

  9. Janssens T V W, Falsig H, Lundegaard L F, Vennestrom P N R, Rasmussen S B, Moses P G, Giordanino F, Borfecchia E, Lomachenko K A, Lamberti C, Bordiga S, Godiksen A, Mossin S and Beato P 2015 A consistent reaction scheme for the selective catalytic reduction of nitrogen oxides with ammonia. ACS Catal. 5: 2832–2845

    Article  Google Scholar 

  10. Chaieb T, Delannoy L, Casale S, Louis C and Thomas C 2015 Evidence for an H2 promoting effect in the selective catalytic reduction of NOx by propene on Au/Al2O3. Chem. Commun. 51: 796–799

    Article  Google Scholar 

  11. Torre U D L, Pereda-Ayo B, Gonzalez-Marcos J A, Gutierrez-Ortiz M A and Gonzalez-Velasco J R 2016 Performance of Cu-ZSM-5 in a coupled monolith NSR–SCR system for NOx removal in lean-burn engine exhaust. Top. Catal. 59: 259–267

    Article  Google Scholar 

  12. Burch R, Breen J P and Meunier F C 2002 A review of the selective reduction of NOx with hydrocarbons under lean-burn conditions with non-zeolite oxide and platinum group metal catalysts. Appl. Catal. B 39: 283–303

    Article  Google Scholar 

  13. Hong H and Yunbo Y 2008 Review of Ag/Al2O3-reductant system in the selective catalytic reduction of NOx. Catal. Surv. Asia 12: 38–55

    Article  Google Scholar 

  14. PaÃrvulescu V I, Grange P and Delmon B 1998 Catalytic removal of NO. Catal. Today 46: 233–316

    Article  Google Scholar 

  15. Marchitti F, Nova I and Tronconi E 2016 Experimental study of the interaction between soot combustion and NH3-SCR reactivity over a Cu–Zeolite SDPF catalyst. Catal. Today 267: 110–118

    Article  Google Scholar 

  16. Guan B, Zhan R, Lin H and Huang Z J 2015 Review of the state-of-the-art of exhaust particulate filter technology in internal combustion engines. Environ. Manag. 154: 225–258

    Google Scholar 

  17. Khair M K 2003 A review of diesel particulate filter technologies. SAE Technical Paper 2003-01-2303

  18. Johansen K, Dahl S, Mogensen G, Pehrson S, Schramm J and Ivarsson A 2007 Novel base metal–palladium catalytic diesel filter coating with NO 2 reducing properties. SAE Technical Paper 2005-01-0671

  19. Johansen K, Bentzer H, Kustov A, Larsen K, Janssens T V W and Barfod R G 2014 Integration of vanadium and zeolite type SCR functionality into DPF in exhaust aftertreatment systems—advantages and challenges. SAE Technical Paper 2014- 01-1523

  20. Zhan R, Eakle S T and Weber P 2010 Simultaneous reduction of PM, HC, CO and NOx emissions from a GDI engine. SAE Technical Paper 2010-01-0365

  21. Ohki H, Ishiyama S and Asano A 2003 Control technology for a passenger car diesel engine equipped, with the DPNR system. SAE Technical Paper (No. 2003-01-1880)

  22. Suzuki J and Shinichi M 2004 Development of catalysts for diesel particulate NOx reduction. Top. Catal. 28: 171–176

    Article  Google Scholar 

  23. Millet C N, Chédotal R and Da Costa P 2009 Synthetic gas bench study of a 4-way catalytic converter: catalytic oxidation, NOx storage/reduction and impact of soot loading and regeneration. Appl. Catal. B: Environ. 90: 339–346

    Article  Google Scholar 

  24. Liu J, Xu J, Zhao Z, Duan A, Jiang G and Jing Y A 2010 Novel four-way combining catalysts for simultaneous removal of exhaust pollutants from diesel engine. J. Environ. Sci. 22: 1104–1109

    Article  Google Scholar 

  25. Misono M 2005 A view on the future of mixed oxide catalysts: the case of heteropolyacids (polyoxometalates) and perovskites. Catal. Today 100: 95–100

    Article  Google Scholar 

  26. Wallin M, Karlsson C, Skoglundh M and Palmqvist A 2009 Selective catalytic reduction of NOx with NH3 over zeolite H–ZSM-5: influence of transient ammonia supply. J. Catal. 218: 354–364

    Article  Google Scholar 

  27. Wang P X, Yu S S, Yang L H and Zhang X S 2007 Selective catalytic reduction of NO by C2H2 over MoO3/HZSM-5. Appl. Catal. B 71: 246–253

    Article  Google Scholar 

  28. Li Z, Meng M, Dai F, Hu T, Xie Y and Zhang J 2012 Performance of K and Ni substituted La1–xKxCo1–yNiyO3 perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal. Fuel 93: 606–610

    Article  Google Scholar 

  29. Klissurski D G and Uzunova E L 1991 Synthesis of nickel cobaltite spinel from co-precipitated nickel–cobalt hydroxide carbonate. Chem. Mater. 3: 1060–1063

    Article  Google Scholar 

  30. Chaieb T, Delannoy L, Costentin G, Louis C, Casale S, Chantry R L, Li Z Y and Thomas C 2014 Insights into the influence of the Ag loading on Al2O3 in the H2-assisted C3H6-SCR of NOx. Appl. Catal. B 156: 192–201

    Article  Google Scholar 

  31. Prasad R and Rattan G 2009 Design of a compact and versatile bench scale tubular reactor. Bull. Chem. React. Eng. Catal. 4: 5–9

    Google Scholar 

  32. Sing K S W and Williams R T 2004 Physisorption hysteresis loops and the characterization of nonporous materials. Adsorp. Sci. Technol. 22: 773–781

    Article  Google Scholar 

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Acknowledgements

The authors gratefully acknowledge the instruments and equipment used in this investigation purchased from financial support given to the project under SERC SR/S3/ME/ 027/2006 by the Department of Science and Technology, India.

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  1. Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India

    SUVERNA TRIVEDI & RAM PRASAD

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  1. SUVERNA TRIVEDI
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  2. RAM PRASAD
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Correspondence to SUVERNA TRIVEDI.

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TRIVEDI, S., PRASAD, R. A four-way catalytic system for control of emissions from diesel engine. Sādhanā 43, 130 (2018). https://doi.org/10.1007/s12046-018-0884-0

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