Skip to main content
SpringerLink
Log in

Phase relationships and thermodynamic properties of the Pd-S system

  • Published:
Metallurgical Transactions B Aims and scope Submit manuscript

Abstract

Sulfur pressures in the Pd-S system have been measured for liquid mattes and PdS/liquid matte mixtures by a Knudsen effusion technique, and for Pd/matte, Pd4S/matte, and Pd/Pd4S mixtures by an emf method employing a solid oxide electrolyte. The phase diagram has also been determined by conventional DTA methods from 0 to 50 at. pct sulfur, using microprobe analysis to confirm the identification of equilibrated phases. From this information, the standard free energies of formation of solid and liquid Pd4S, Pd3S, and Pd16S7 and solid PdS have been derived. For the reaction of solid Pd with S2 gas to form solid sulfide, the values are ΔG°TPd4S = -184400 + 84.10T, ΔG°TPd3S =-172430 + 83.68T, ΔG°TPd16/7S = -182340 + 105.66T, and ΔG°TPd16/7S = -145180 + 88.12T, all in joules. The results for Pd4S differ considerably from the previously accepted values.

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. K. Niwa, T. Yokokawa, and T. Isoya:Bull. Chem. Soc. Japan. 1962, vol. 35, pp. 1543–45.

    Article  CAS  Google Scholar 

  2. W. Biltz and J. Laar:Z. anorg. Chem., 1936, vol. 228, p. 257.

    Article  CAS  Google Scholar 

  3. F. Wiebke and J. Laar:Z. anorg. Chem., 1935, vol. 224, pp. 49–61.

    Article  Google Scholar 

  4. F. Gronvold and E. Rost:Acta Chem. Scand., 1956, vol. 10, pp. 1620–34.

    Article  Google Scholar 

  5. E. Rost and E. Vestersjo:Acta Chem. Scand., 1968, vol. 22, pp. 819–26.

    Google Scholar 

  6. P. Matkovic, M. El-Boragy, and K. Schubert: J. Less-Common Metals. 1976. vol. 50, pp. 165–76.

    Article  CAS  Google Scholar 

  7. J.R. Taylor:Metall. Trans. B, 1981, vol. 12B, pp. 47–54.

    CAS  Google Scholar 

  8. V. K. Tagirov, E. K. Kazenas, G.N. Zviadadze, and N.M. Pavlyuchenko:Russian Metallurgy, 1981, pp. 33-36.

  9. H.R. Larson and J.F. Elliott:Trans. TMS-AIME, 1967, vol. 239, pp. 1713–20.

    CAS  Google Scholar 

  10. K. C. Mills:Thermodynamic Data for Inorganic Sulphides, Selenides and Tellurides, Butterworths, London, 1974.

    Google Scholar 

  11. O. Kubaschewski, E. LL. Evans, and C.B. Alcock:Metallurgical Thermochemistry, Pergamon Press, Oxford, 1967, p. 213.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Johnson Matthey Research Centre, RG4 9NH, Sonning Common, Reading, England

    Jeffrey R. Taylor (Principal Scientist)

Authors
  1. Jeffrey R. Taylor
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Taylor, J.R. Phase relationships and thermodynamic properties of the Pd-S system. Metall Trans B 16, 143–148 (1985). https://doi.org/10.1007/BF02657499

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02657499

Keywords

Search

Navigation