Skip to main content
SpringerLink
Log in

Study of the Catalytic Activity–Semiconductive Properties Relationship For BaTiO3 and PbTiO3 Perovskites, Catalysts for Methane Combustion

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

The electrical conductivity of barium and lead perovskites used as catalysts for the total oxidation of methane, has been measured under nitrogen, methane–nitrogen mixture, air and methane–air mixture (reaction mixture) at the catalytic reaction temperature. The two compounds appeared to be p-type semiconductors under air with positive holes as the main charge carriers but became n-type when contacted with methane–nitrogen mixture. Their conductivities differ by 1.5 orders of magnitude as n-type semiconductors and by three orders of magnitude when being p-type semiconductors. These results explained the difference in the catalytic activity encountered on the two solids. The alkane activation was proposed to be related in both cases to the p-type semiconducting properties of the solids, likely through hydrogen abstraction by a surface O− species, forming a CH •3 radical. The overall reaction mechanism on both perovskites can be assimilated to a Mars and van Krevelen mechanism.

Graphical Abstract

The electrical conductivity of barium and lead perovskites, catalysts for methane total oxidation, has been studied under different gaseous atmospheres at the reaction temperature and a reaction mechanism has been proposed.

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. Herrmann J-M (1994) In: Imelik B, Védrine JC (eds) Catalyst characterization, physical techniques for solid materials. Plenum Press, New York ch. 20

    Google Scholar 

  2. Herrmann J-M, Vernoux P, Béré KE, Abon M (1997) J. Catal. 167:106

    Article  CAS  Google Scholar 

  3. Marcu I-C, Millet JMM, Herrmann JM (2002) Catal Lett 78:273

    Article  CAS  Google Scholar 

  4. Marcu I-C, Săndulescu I, Schuurman Y, Millet JMM (2008) Appl Catal A 334:207

    Article  CAS  Google Scholar 

  5. Madeira LM, Herrmann JM, Freire FG, Portela MF, Maldonado FJ (1997) Appl Catal A 158:243

    Article  CAS  Google Scholar 

  6. Madeira LM, Herrmann JM, Disdier J, Portela MF, Freire FG (2002) Appl Catal A 235:1

    Article  CAS  Google Scholar 

  7. Millet JMM, Marcu I-C, Herrmann JM (2005) J Mol Catal A 226:111

    Article  CAS  Google Scholar 

  8. Popescu I, Urda A, Yuzhakova T, Marcu I-C, Kovacs J, Săndulescu I (2009) C R Chim 12:1072

    Article  CAS  Google Scholar 

  9. Heckelsberg LF, Clark A, Bailey GC (1956) J Phys Chem 60:559

    Article  CAS  Google Scholar 

  10. Mars S, van Krevelen N (1954) Chem Eng Sci Special Sup 9:41

    Google Scholar 

Download references

Acknowledgments

The authors are grateful to Dr. Éva Makó from the University of Pannonia for her XRD expertise and for unit cell parameters calculation. The Romanian National Authority for Scientific Research (ANCS) is acknowledged for the financial support of this work under the contract PN II nr. 105/15.09.2008.

Author information

Authors and Affiliations

  1. Department of Chemical Technology and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12, Blv. Regina Elisabeta, 030018, Bucharest, Romania

    Ionel Popescu, Ioan Săndulescu & Ioan-Cezar Marcu

  2. Department of Environmental Engineering and Chemical Technology, Faculty of Engineering, University of Pannonia, 10 Egyetem St., 8201, Veszprém, Hungary

    Ákos Rédey

Authors
  1. Ionel Popescu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ioan Săndulescu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Ákos Rédey
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Ioan-Cezar Marcu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ioan-Cezar Marcu.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Popescu, I., Săndulescu, I., Rédey, Á. et al. Study of the Catalytic Activity–Semiconductive Properties Relationship For BaTiO3 and PbTiO3 Perovskites, Catalysts for Methane Combustion. Catal Lett 141, 445–451 (2011). https://doi.org/10.1007/s10562-010-0538-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10562-010-0538-2

Keywords

Search

Navigation