Skip to main content
SpringerLink
Log in

About the active phases of KNO3/MgO for catalytic soot combustion

  • Published:
Reaction Kinetics, Mechanisms and Catalysis Aims and scope Submit manuscript

Abstract

Reports suggest KNO3 as the active phase for the catalytic combustion of soot, through a redox mechanism with KNO2. Previously, the high activity of KNO3 for coal gasification (mechanism similar to that of soot combustion) was attributed to decomposition into active KxOy (y < x) compounds. In this work, TGA-MS assays of carbothermic reduction using the KNO3/MgO catalyst showed decomposition into NOx, (to which starting of CB combustion is attributed) and potassium oxide, thus disregarding possible redox cycles KNO3/KNO2. Consecutive assays of carbothermic reduction and TPO in a fixed bed reactor showed the potassium oxides as the main active phases of these catalysts.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

  1. Jiménez R, García X, López T, Gordon AL (2008) Fuel Process Technol 89:1160–1168

    Article  Google Scholar 

  2. Sui L, Yu L, Zhang Y (2007) Energy Fuels 21:1420–1424

    Article  CAS  Google Scholar 

  3. Iojoiu EE, Bassou B, Guilhaume N, Farrusseng D, Desmartin-Chomel A, Lombaert K, Bianchi D, Mirodatos C (2008) Catal Today 137:103–109

    Article  CAS  Google Scholar 

  4. Russo N, Furfori S, Fino D, Saracco G, Specchia V (2008) Appl Catal B: Environ 83:85–95

    Article  CAS  Google Scholar 

  5. Stanmore BR, Brilhac JF, Gilot P (2001) Carbon 39:2247–2268

    Article  CAS  Google Scholar 

  6. Jiménez R, García X, Cellier C, Ruiz P, Gordon AL (2006) Appl Catal A: Gen 297:125–134

    Article  Google Scholar 

  7. Carrascull AL, Ponzi MI, Ponzi EN (2003) Ind Eng Chem Res 42:692–697

    Article  CAS  Google Scholar 

  8. Pisarello ML, Milt V, Peralta MA, Querini CA, Miró EE (2002) Catal Today 75:465–470

    Article  CAS  Google Scholar 

  9. Russo N, Fino D, Saracco G, Specchia V (2005) J Catal 229:459–469

    Article  CAS  Google Scholar 

  10. Jiménez R, García X, Gordon AL, Chil J (2005) Chem Soc 50(4):651–665

    Google Scholar 

  11. Jiménez R, García X, Cellier C, Ruiz P, Gordon AL (2006) Appl Catal A: Gen 314:81–88

    Article  Google Scholar 

  12. Querini C, Ulla MA, Requejo F, Soria J, Sedrán UA, Miró EE (1998) Appl Catal B: Environ 15:5–19

    Article  CAS  Google Scholar 

  13. Carrascull AL, Lick D, Ponzi E, Ponzi M (2003) Catal Commun 4:124–128

    Article  CAS  Google Scholar 

  14. Hüttinger K, Minges R (1986) Fuel 65:1122–1128

    Article  Google Scholar 

  15. McKee DW (1983) Fuel 62:170–175

    Article  CAS  Google Scholar 

  16. Yuh SJ, Wolf EE (1983) Fuel 62:252–255

    Article  CAS  Google Scholar 

  17. Chen SG, Yang RT (1997) Energy Fuels 11:421–427

    Article  CAS  Google Scholar 

  18. Hüttinger K, Minges R (1986) Fuel 65:1112–1121

    Article  Google Scholar 

  19. Wang Y, Huang WY, Chun Y, Xia JR, Zhu JH (2001) Chem Mater 13:670–677

    Article  CAS  Google Scholar 

Download references

Acknowledgements

The support of FONDECYT, Chile, Grants No. 11060301 and 1071016, and CONICYT, Chile, Grant PFB-27, is gratefully acknowledged.

Author information

Authors and Affiliations

  1. Chemical Engineering Department, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile

    Romel Jiménez, Ximena García & Alfredo L. Gordon

Authors
  1. Romel Jiménez
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ximena García
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Alfredo L. Gordon
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Romel Jiménez.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Jiménez, R., García, X. & Gordon, A.L. About the active phases of KNO3/MgO for catalytic soot combustion. Reac Kinet Mech Cat 99, 281–287 (2010). https://doi.org/10.1007/s11144-009-0145-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11144-009-0145-7

Keywords

Search

Navigation