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Structural and Morphological Characterization of Pt/WO x –ZrO2 Catalysts

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Abstract

Catalysts of Pt/WO x –ZrO2 type with 1 wt% of Pt and 10, 15 and 20 wt% of tungsten were synthesized and characterized. The structural and morphological features of these catalysts were studied. The samples were synthesized by impregnation method and calcined at 600 °C, 700 °C and 800 °C. The characterizations were carried out using different techniques: X-ray diffraction, Raman spectroscopy, scanning electronic microscopy, nitrogen adsorption measurement and refinement of their crystalline structures by Rietveld method. X-ray diffraction patterns revealed the formation ZrO2 and WO3 crystalline structures and its crystallite size were determined. The zirconium oxide crystallized into tetragonal and monoclinic phases and tungsten trioxide crystallized into monoclinic phase. Crystalline WO3 and amorphous WO x species were detected by Raman spectra.

Index Abstract

Catalysts of Pt/WO x –ZrO2 type with 1 wt% of Pt and 10, 15 and 20 wt% of tungsten were synthesized and characterized. The structural and morphological features of these catalysts were studied. The samples were synthesized by impregnation method and calcined at 600 °C, 700 °C and 800 °C. The characterizations were carried out using different techniques: X-ray diffraction, Raman spectroscopy, scanning electronic microscopy, nitrogen adsorption measurement and refinement of their crystalline structures by Rietveld method. X-ray diffraction patterns revealed the formation ZrO2 and WO3 crystalline structures and its crystalline size were determined. The zirconium oxide crystallized into tetragonal and monoclinic phases and tungsten trioxide crystallized into monoclinic phase. Crystalline WO3 and amorphous WO x species were detected by Raman spectra.

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References

  1. Arata K, Hino M (1990) Mater Chem Phys 26:213–237

    Article  CAS  Google Scholar 

  2. Barton DG, Soled SL, Meitzner GD, Fuentes GA, Iglesia E (1999) J Catal 181:57–72

    Article  CAS  Google Scholar 

  3. Barton DG, Shtein M, Wilson RD, Soled SL, Iglesia E (1999) J Phys Chem B 103:630–640

    Article  CAS  Google Scholar 

  4. Garrido Pedrosa AM, Souza MJB, Marinkovic BA, Melo DMA, Araujo AS (2008) Appl Catal A Gen 342:56–62

    Article  CAS  Google Scholar 

  5. Boyse RA, Ko EI (1997) J Catal 171:191–207

    Article  CAS  Google Scholar 

  6. Valigi M, Gazzoli D, Pettiti I, Maattei G, Colonna S, Rossi S, Ferraris G (2002) Appl Catal A Gen 231:159–172

    Article  CAS  Google Scholar 

  7. Gregorio FD, Keller V (2004) J Catal 225:45–55

    Article  CAS  Google Scholar 

  8. Iglesia E, Barton DG, Soled SL, Miseo S, Baumgartner J, Gates WE, Fuentes GA, Meitzner GD (1996) Stud Surf Sci Catal 101:533–542

    Article  CAS  Google Scholar 

  9. Hino M, Arata KJ (1988) J Chem Soc Chem Commun 18:1259–1260

    Article  Google Scholar 

  10. Vaudagna SR, Comeli RA, Figoli NS (1997) Appl Catal A Gen 164:265–280

    Article  CAS  Google Scholar 

  11. Santiesteban JG, Vartuli JC, Han S, Bastian RD, Chang CD (1997) J Catal 168:431–441

    Article  CAS  Google Scholar 

  12. Sun W, Xu L, Chu Y, Shi W (2003) J Colloid Interf Sci 266:99–106

    Article  CAS  Google Scholar 

  13. Melezhyk OV, Prudius SV, Brei VV (2001) Microporous Mesoporous Mater 49:39–44

    Article  CAS  Google Scholar 

  14. Tani E, Yoshimura M, Somiya S (1983) J Am Ceram 66:11

    Article  CAS  Google Scholar 

  15. Garrido Pedrosa AM, Souza MJB, Lima SH, Melo DMA, Souza AG, Araujo AS (2007) J Therm Anal Calorim 87:703–707

    Article  CAS  Google Scholar 

  16. Vaudagna SR, Canavese SA, Comeli RA, Figoli NS (1998) Appl Catal A Gen 168:93–111

    Article  CAS  Google Scholar 

  17. Young RA, Sakthivel A, Moss TS, Paiva-Santos COJ (1995) Appl Crystallogr 28:366

    Article  Google Scholar 

  18. West AR (1999) Basic solid state chemistry, 2nd edn. Wiley, New York

    Google Scholar 

  19. Punnoose A, Seehra MS, Wender I (2001) Fuel Process Technol 74:33–47

    Article  CAS  Google Scholar 

  20. Figueras F, Palomeque J, Loridnt S, Feche C, Essayem N, Gelbrd G (2004) J Catal 226:25–31

    Article  CAS  Google Scholar 

  21. Lajavardi M, Kenney DJ, Lin SH (2000) J Chin Chem Soc 47:1043–1053

    CAS  Google Scholar 

  22. Canton P, Fagherazzi G, Frattini R, Riello P (1999) J Appl Cryst 32:475–480

    Article  CAS  Google Scholar 

  23. Wang DN, Guo YO, Liang KM, Tao K (1999) Sci China Ser A Math Phys Astron 42:80–86

    Article  CAS  Google Scholar 

  24. Haglund J, Guillermet AF, Grimvall G, Korling M (1993) Phys Rev B 48:11685–11691

    Article  Google Scholar 

  25. Vogt T, Woodward PM, Hunter BA (1999) J Solid State Chem 144:209–215

    Article  CAS  Google Scholar 

  26. Hill RJ, Howard CJ (1987) J Appl Cryst 20:467–474

    Article  CAS  Google Scholar 

  27. Zhao B, Xu X, Gao J, Fu Q, Tang Y (1996) Raman Spectrosc 27:549

    Article  CAS  Google Scholar 

Download references

Acknowledgments

The authors would like to express their gratitude to the Conselho Nacional de Desenvolvimento Científico e Tecnologico (CNPq) for its financial support, to S. A. Junior (UFPE/DQTE, Brazil) by Raman analysis and to CTPETRO-INFRA and FINEP/LIEM by SEM analysis.

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Authors and Affiliations

  1. Department of Chemistry, Federal University of Rio Grande do Norte, CP 1662, Natal, RN, 59078-970, Brazil

    A. M. Garrido Pedrosa, D. M. A. Melo, A. S. Araujo, S. H. Lima & M. A. F. Melo

  2. Department of Chemical Engineering, Federal University of Sergipe, Sao Cristovao, SE, 49000-100, Brazil

    M. J. B. Souza

  3. Department of Physics, Federal University of Ceará, CP 6030, Fortaleza, CE, 60455-760, Brazil

    J. M. Sasaki

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  1. A. M. Garrido Pedrosa
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  2. D. M. A. Melo
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  4. A. S. Araujo
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  5. S. H. Lima
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Correspondence to A. M. Garrido Pedrosa.

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Garrido Pedrosa, A.M., Melo, D.M.A., Souza, M.J.B. et al. Structural and Morphological Characterization of Pt/WO x –ZrO2 Catalysts. J Chem Crystallogr 39, 186–192 (2009). https://doi.org/10.1007/s10870-008-9454-3

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  • DOI: https://doi.org/10.1007/s10870-008-9454-3

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