JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Study of the Optimal Calcination Temperature of an Al/Co/Ni Mixed Metal Oxide as a DeNOx Catalyst for LNT
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Clean Technology
  • Volume 21, Issue 3,  2015, pp.184-190
  • Publisher : The Korean Society of Clean Technology
  • DOI : 10.7464/ksct.2015.21.3.184
 Title & Authors
Study of the Optimal Calcination Temperature of an Al/Co/Ni Mixed Metal Oxide as a DeNOx Catalyst for LNT
Jang, Kil Nam; Han, Kwang Seon; Hong, Ji Sook; You, Young-Woo; Suh, Jeong Kwon; Hwang, Taek Sung;
  PDF(new window)
 Abstract
Most of LNT catalysts use noble metals such as Pt for low temperature NOx oxidation but there is an economic weakness. For the purpose of overcoming this, this study is to develop DeNOx catalyst for LNT excluding PGM (platinum group metal) such as Pt, Pd, Rh, etc. To do so, Al/Co/Ni catalyst selected as a preliminary test is used to study fundamental property and NOx’s conversion according to calcined temperature. Ultimately, that is, Al/Co/Ni mixed metal oxide which does not use PGM is selected and physicochemical characterization is performed by way of XRD, EDS, SEM, BET and ramp test and NOx conversion is also analyzed. This study shows that all samples consist of mixed oxides of spinel structure of Co2AlO4 and NiAl2O4 and have enough pore volume and size for redox. But as a result of NH3-TPD test, it is desired that calcined temperature needs to be maintained at 700 ℃ or lower. Also only samples which are processed under 500 ℃ satisfied NO and NOx conversion simultaneously through ramp test. Based on this study’s results, optimum calcined temperature for Al/Co/Ni
 Keywords
DeNOx;Catalyst;Lean NOx trap (LNT);PGM-free;Calcination;
 Language
English
 Cited by
 References
1.
Güthenke, A., Chatterjee, D., Weibel, M., Krutzsch, B., Koc, P., Marek, M., Nova, I., and Tronconi, E., “Current Status of Modeling Lean Exhaust Gas Aftertreatment Catalysts,” Adv. Chem. Eng., 33, 103-211 (2008).

2.
Forzatti, P., “Present Status and Perspectives in de-NOx SCR Catalysis,” Appl. Catal. A: Gen., 222, 221 (2001). crossref(new window)

3.
Epling, W. S., Parks, J. E., Campell, G. C., Yezerets, A., Currier, N. W., Neal, W., and Campbell, L. E., “Further Evidence of Multiple NOx Sorption Sites on NOx Storage/Reduction Catalysts,” Catal. Today, 96(1-2), 21-30 (2004). crossref(new window)

4.
Matsumoto, S., “Recent Advances in Automobile Exhaust Catalysts,” Catal. Today, 90, 183-190 (2004). crossref(new window)

5.
Roy, S., and Baiker, A., “NOx Storage-Reduction Catalysis: From Mechanism and Materials Properties to Storage-Reduction Performance,” Chem. Rev., 109, 4054-4091 (2009). crossref(new window)

6.
Johnson, T., “Diesel Engine Emissions and their Control: an Overview, Platinum Metals Rev., 52(1), 23-37 (2008). crossref(new window)

7.
Lietti, L., Ramis, G., Berti, F., Toledo, G., Robba, R., Busca, G., and Forzatti, P., “Chemical, Structural and Mechanistic Aspects on NOx SCR over Commercial and Model Oxide Catalysts,” Catal. Today, 42, 101-116 (1998). crossref(new window)

8.
Xu, L., McCabe, R., Ruona, W., and Gavataio, G., “Impact of a Cu-zeolite SCR Catalyst on the Performance of a Diesel LNT+SCR System,” SAE International, [special Publication], SP-2254 (Diesel Exhaust Emission Control), pp. 121-132 (2009).

9.
Lindholm, A., Sjövall, H., and Olsson, L., “Reduction of NOx over a Combined NSR and SCR System,” Appl. Catal. B: Environ., 98, 112-121 (2010). crossref(new window)

10.
Forzatti, P., and Lietti, L., “The Reduction of NOx Stored on LNT and Combined LNT-SCR Systems,” Catal. Today, 155, 131-139 (2010). crossref(new window)

11.
Weibel, M., Waldbüber, N., Wunsch, R., Chatterjee, D., Bandl-Konrad, B., and Krutzsch, B., “A NOvel Approach to Catalysis for NOx Reduction in Diesel Exhaust Gas,” Topics in Catal., 52(13-20), 1702-1708 (2009). crossref(new window)

12.
Corbos, E. C., Haneda, M., Courtois, X., Marecot, P., Duprez, D., and Hamada, H., “Cooperative Effect of Pt-Rh/Ba/Al and CuZSM-5 Catalysts for NOx Reduction during Periodic Leanrich Atmosphere, Catal. Commun., 10(2), 137-141 (2008). crossref(new window)

13.
Corbos, E. C., Haneda, M., Courtois, X., Marecot, P., Duprez, D., and Hamada, H., “NOx Abatement for Lean-burn Engines under Lean-rich Atmosphere over Mixed NSR-SCR Catalysts: Influences of the Addition of a SCR Catalyst and of the Operational Conditions,” Appl. Catal. A: Gen., 365, 187-193 (2009). crossref(new window)

14.
Han, A-R., Hwang, Y.-A., and Chang, K. S., “Adsorption-Desorption Characteristics of N2O and O2 over Mixed Oxide Catalysts of AlCoPd (1/1/0.05) and AlCoFe (1/1/2), Clean Technol., 17(2), 142-149 (2011).

15.
Seo, C. K., Kim, H., Choi, B., and Lim, M. T., “The Optimal Volume of a Combined System of LNT and SCR Catalysts,” J. Ind. Eng. Chem., 17(3), 382-385 (2011). crossref(new window)

16.
Park, S., Kim, H., and Choi, B., “Effective Parameters for DME Steam Reforming Catalysts for the Formation of H2 and CO,” J. Ind. Eng. Chem., 16(5), 734-740 (2010). crossref(new window)

17.
James, E., and Parks, II., “Less Costly Catalysts for Controlling Engine Emissions,” Science, 327, 1584-1585 (2010). crossref(new window)

18.
Kim, C. H., Qi, G., Dahlberg, K., and Li, W., “Strontium-Doped Perovskites Rival Platinum Catalysts for Treating NOx in Simulated Diesel Exhaust,” Science, 327, 1624-1627 (2010). crossref(new window)

19.
Matarrese, R., Artioli, N., Castoldi, L., Lietti, L., and Forzatti, P., “Interaction between Soot and Stored NOx during Operation of LNT Pt-Ba/Al2O3 Catalysts,” Catal. Today, 184, 271-278 (2012). crossref(new window)

20.
http://www.reseat.re.kr, ReSEAT Analysis Report, Automobile Catalyst(2013).

21.
Jang, K. N., Han, K. S., Hong, J. S., You, Y.-W., and Hwang, T., S., “Basic Research to Develop PGM-free DeNOx Catalyst for LNT,” Clean Technol., 21(2), 117-123 (2015). crossref(new window)