Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 59, Issue 3, pp 617–624 | Cite as

Contribution to the Study of the Solid-state Reaction of Mercury With Pure Rhodium

  • E. Milaré
  • F. L. Fertonani
  • A. V. Benedetti
  • M. Ionashiro
Article

Abstract

Thermogravimetry (TG) and other analysis techniques (EDX, SEM, Mapping surface, X-ray diffraction, inductively coupled argon plasma emission spectroscopy and atomic spectrometry with cold vapor generation) were used to study the reaction of Hg with Rh. The results permitted the suggestion that, when subjected to heat, an electrodeposited Hg film reacts with Rh to form intermetallic products with different stabilities, as indicated by at least three mass loss steps. In the first step, between room temperature and 160°C, only the bulk Hg is removed. From this temperature up to about 175°C, the mass loss can be attributed to the desorption of a film of metallic Hg. The last step, from 175 to 240°C, can be ascribed to the removal of Hg from a thin dark film of RhHg2 .

EDX microanalysis electrodeposit mercury rhodium SEM TG 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R. W. Joyner and E. S. Shapiro, Catalysis Letter, 9 (1991) 239.CrossRefGoogle Scholar
  2. 2.
    M. B. Kizling, P. Stenius, S. Andersson and A. Frestad, Appl. Catal. B-Environ, 1 (1992) 149.CrossRefGoogle Scholar
  3. 3.
    E. Xue, K. Seshan, J. G. Vanommen and J. R. H. Ross, Appl. Catal. B-Environ, 2 (1993) 183.CrossRefGoogle Scholar
  4. 4.
    G. E. Poirier, B. K. Hance and J. M. White, J. Phys. Chem., 97 (1993) 5965.CrossRefGoogle Scholar
  5. 5.
    J. L. G. Fierro, J. M. Palacios and F. Tomas, J. Mater. Sci., 27 (1992) 685.CrossRefGoogle Scholar
  6. 6.
    M. Awada, J. Strojek and G. M. Swain, J. Electrochem. Soc., 142 (1995) L42.CrossRefGoogle Scholar
  7. 7.
    M. Fleishmann, S. Pons, D. Robson and P. P. Schmidt (Eds.), Ultramicroelectrodes, Datatech Science Morganton, N. C., 1987.Google Scholar
  8. 8.
    R. M. Whightmann and D. O. Wipf, in A. J. Bard (Eds.), Electroanalytical Chemistry, Vol. 15, Marcel Dekker, New York 1989.Google Scholar
  9. 9.
    P. J. Cumpson and M. P. Seah, National Physical Laboratory (UK), Internal communication 1994, p. 32.Google Scholar
  10. 10.
    C. Guminski, Bull. Alloy Phase Diagrams, 11 (1990) 22.Google Scholar
  11. 11.
    T. B. Massalski, H. Okamoto, P. R. Subramanian and L. Kacprzak (Eds.), Binary Alloy Phase Diagrams, ASM, International Press, USA 1990, Vol. 3.Google Scholar
  12. 12.
    S. P. Kounaves and J. Buffle, J. Electroanal. Chem., 216 (1987) 53.CrossRefGoogle Scholar
  13. 13.
    M. Z. Hassan, D. F. Untereker and S. Bruckenstein, J. Electroanal. Chem., 42 (1973) 161.Google Scholar
  14. 14.
    S. Affrossman and W. G. Erskine, Trans. Faraday Soc., 62 (1966) 2922.CrossRefGoogle Scholar
  15. 15.
    S. Affrossman, W. G. Erskine and J. Paton, Trans. Faraday Soc., 64 (1968) 2856.CrossRefGoogle Scholar
  16. 16.
    F. L. Fertonani, A. V. Benedetti and M. Ionashiro, Thermochim. Acta, 265 (1995) 151.CrossRefGoogle Scholar
  17. 17.
    G. D. Robins and C. G. Enke, J. Electroanal. Chem., 23 (1969) 343.Google Scholar
  18. 18.
    F. L. Fertonani, M. Ionashiro, P. Melnikov, F. Sanz and A. V. Benedetti, Thermochim. Acta, to be submitted.Google Scholar
  19. 19.
    C. Feldman, Anal. Chem., 46 (1974) 99.CrossRefGoogle Scholar
  20. 20.
    E. Jackwert, P. G. Willmer, R. H?hn and H. Berndt, At. Abs. Newsl., 18 (1979) 66.Google Scholar
  21. 21.
    C. Wechter and J. Osteryoung, Anal. Chim. Acta, 234 (1990) 275.CrossRefGoogle Scholar
  22. 22.
    Powder Diffraction File PDF2, Data Base Sets 1?44, published by the Joint Committee on Powder Diffraction Standard. International Centre for Diffraction Data, Pennsylvania, 1988 (CD-ROM).Google Scholar
  23. 23.
    M. Hansen, Constitution of Binary Alloys, McGraw-Hill, New York 1958.Google Scholar
  24. 24.
    G. Jangg and T. Dortbudak, Z. Metallkd., 64 (1973) 715.Google Scholar
  25. 25.
    F. L. Fertonani, A. V. Benedetti, J. Servat, J. Portillo and F. Sanz, Thin Solid Films, 341 (1999) 1.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • E. Milaré
    • 1
  • F. L. Fertonani
    • 1
  • A. V. Benedetti
    • 1
  • M. Ionashiro
    • 1
  1. 1.Instituto de QuímicaUniversidade Estadual Paulista, AraraquaraSăo PauloBrazil

Personalised recommendations