Skip to main content
SpringerLink
Log in

Synthesis of hexaaluminate catalysts for methane combustion by reverse microemulsion medium

  • Published:
Science in China Series B: Chemistry Aims and scope Submit manuscript

Abstract

The aim of this study is to synthesize the catalysts of Fe- and Mn-substituted hexaaluminate by reverse microemulsion medium for methane catalytic combustion application. Pseudo-ternary phase diagrams in quaternary microemulsion systems of cetyltrimethylammonium bromide (CTAB), n-butanol, n-octane, and water [or Al(NO3)3 solution] were presented. The effects of the alcohol chain length, ratio of sur-factant to cosurfactant, and salt concentration on the formation and stability of microemulsion systems were studied. The phase behavior of microemulsion systems was confirmed through the varying of the conductivity with the water content. The performance and structure of the catalysts, La(Mn x /Fe x )Al12−x − O19-δ synthesized with the optimal parameter in the phase diagrams of microemulsions systems were characterized by BET, TG-DTA, and XRD. The micro fix-bed reactor was used to measure the catalytic activities of catalysts to methane combustion. The results showed that this synthesis method could yield non-agglomerated and highly dispersed precursors that would undergo crystallization at the lower temperature of 950°C. When temperature was raised up to 1050°C, the complete crystalline La-hexaaluminate was shaped. The hexaaluminate substituted with Fe had high-catalytic activity and stability at high temperature, while the Mn-substituted had higher catalytic activity at lower temperature. When the cooperation of Fe and Mn occurred, i.e., LaFeMnAl10O19−δ exhibited a high surface area and catalytic activity to CH4 combustion, the CH4 light-off temperature was only 475°C and the complete combustion temperature was 660°C. This was attributed to the synergistic effect between Fe and Mn.

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

Similar content being viewed by others

References

  1. Johansson E M, Danielsson K M J, Pocoroba E, Haralson E D, Jaras S G. Catalytic combustion of gasified biomass over hexaaluminate catalysts: Influence of palladium loading and ageing. Appl Catal A, 1999, 182: 199–208

    Article  Google Scholar 

  2. Thevenin P O, Ersson A G, Kusar H M J, Menon P G, Jaras S G. Deactivation of high temperature combustion catalysts. Appl Catal A, 2001, 212(1/2): 189–197

    CAS  Google Scholar 

  3. Groppi G, Cristiani C, Forzatti P. Preparation, characterisation and catalytic activity of pure and substituted La-hexaaluminate systems for high temperature catalytic combustion. Appl Catal B, 2001, 35(2): 137–148

    Article  CAS  Google Scholar 

  4. Wang L L, Jia G W, Xu Y S. Preparation of nanosized SiO2 particles in a reverse microemulsion system (in Chinese). Chin J Inorg Chem, 2005, 21(10): 1055–1059

    Google Scholar 

  5. Ye F M, He W D, Wang Y M, Li L F, Liu Q F, Zhang X J. Preparation of P(BMA-co-NVP) nanoparticles by interfacial-initiating microe-mulsion polymerization (in Chinese). J Func Polym, 2004, 17(3): 87–91

    CAS  Google Scholar 

  6. Vishal C, Pushan A, Chattopadhyay S, Maitra A N. Preparation of acicular λ-Fe2O3 particles from a microemulsion-mediated reaction. Mater Lett, 1996, 26(1): 21–26

    Article  Google Scholar 

  7. Zarur A J, Ying J Y. Reverse microemulsion synthesis of nanostruc-tured complex oxides for catalytic combustion. Nature, 2000, 403: 65–67

    Article  CAS  Google Scholar 

  8. Zarur A J, Hwu H H, Ying J Y. Reverse microemulsion-mediated synthesis and structural evolution of barium hexaaluminate nanoparticles. Langmuir, 2000, (16): 3042–3049

  9. Watt S L, Tunaley D, Biggs S. The formation of water-in-oil microemulsions using a concentrated saline aqueous phase. Coll Surf A, 1998, 137(1–3): 25–33

    Article  CAS  Google Scholar 

  10. Cui Z G, Yin F S. Microemulsion Technique and Application (in Chinese). Beijing: Publishing Company of Chinese Light Industry, 2001. 191–198

    Google Scholar 

  11. Cui Z G, Yin F S. Microemulsion Technique and Application (in Chinese). Beijing: Publishing Company of Chinese Light Industry, 2001. 179–182

    Google Scholar 

  12. Lam A C, Schechter R S. A study of diffusion and electrical conduction in microemulsions. Coll Interf Sci, 1987, 120(1): 42–45

    Article  CAS  Google Scholar 

  13. Lam A C, Schechter R S. The theory of diffusion in microemulsion. Coll Interf Sci, 1987, 120(1): 56–63

    Article  CAS  Google Scholar 

  14. Borkovec M, Eicke H F. Surfactant monolayer rigidities from Kerr effect measurements on microemulsions. Chem Phys Lett, 1989, 157(5): 457–461

    Article  CAS  Google Scholar 

  15. Fletcher P D I, Robinson B H. Dynamic processes in water in oil microemulsion. Phys Chem J, 1981, 85: 863

    CAS  Google Scholar 

  16. Lada A, Lang L, Zana R. Relation between electric percolation and rate constant for exchange of material between droplets in water in oil microemulsions. Phys Chem J, 1989, 93: 10

    Article  Google Scholar 

  17. Quintela M A L, Rivas J. Chemical reactions in microemulsions: A powerful method to obtain ultrafine particles. Coll Interf Sci, 1993, 158: 446–451

    Article  Google Scholar 

  18. Naoufal D, Millet J M, Garbowski E, Brulle Y, Primet M. Synthesis, structure and catalytic properties of Fe-substituted barium hexaalu-mintes. Catal Lett, 1998, (54): 141–148

  19. Bellotto M, Artioli G, Cristiani G C, Forzatti P, Groppi G. On the crystal structure and cation valence of Mn in Mn-substituted Ba-β-Al2O3. J Catal, 1998(179): 597–605

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China

    ShouLi Bai, BingJie Shi, PengCheng Yang, DianQing Li & AiFan Chen

  2. General Research Institute for Non-ferrous Metals, Grirem Advanced Materials Co., Ltd., Beijing, 100088, China

    LiangShi Wang, MeiSheng Cui & ZhiQi Long

Authors
  1. ShouLi Bai
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. LiangShi Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. BingJie Shi
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. PengCheng Yang
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. MeiSheng Cui
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. ZhiQi Long
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. DianQing Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. AiFan Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to AiFan Chen.

Additional information

Supported by the National Natural Science Foundation of China (No. 20706004) and Beijing Natural Science Foundation (Nos. 2062017 and 8072018)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bai, S., Wang, L., Shi, B. et al. Synthesis of hexaaluminate catalysts for methane combustion by reverse microemulsion medium. Sci. China Ser. B-Chem. 52, 31–38 (2009). https://doi.org/10.1007/s11426-008-0039-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11426-008-0039-y

Keywords

Search

Navigation