Enthalpies of formation of the palladium sulphides

A. Zubkov, T. Fujino, N. Sato, K. Yamada

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36 Citations (Scopus)

Abstract

A high-temperature mixing calorimetry method has been used for the thermochemical study of the Pd-S system. The standard molar enthalpies of formation of the palladium sulphides were derived by measuring the heat effect associated with the formation of a low-melting (Pd + S) liquid alloy from the elements, and the effects associated with the formation of the same melt from the sulphide investigated and one of the pure constituent elements. The following values are reported for the standard enthalpies of formation for the four sulphides studied: ΔfHm(PdS, 298.15 K) = -(78.1 ± 11.0) kJ · mol-1; ΔfHm (Pd16S7, 298.15 K) = -(580.1 ± 36.2) kJ · mol-1; ΔfHm(Pd3S, 298.15 K) = -(96.5 ± 10.5) kJ · mol-1; ΔfHm (Pd4S, 298.15 K) = -(99.2 ± 11.2) kJ · mol-1.

Original languageEnglish
Pages (from-to)571-581
Number of pages11
JournalJournal of Chemical Thermodynamics
Volume30
Issue number5
DOIs
Publication statusPublished - 1998 May

Keywords

  • Enthalpy of formation
  • High-temperature mixing calorimetry
  • Palladium sulphides

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Physical and Theoretical Chemistry

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