High-Temperature Oxidation of Bismuth- and Antimony-Based Sulfosalts

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Åbo Akademi University
  • Seoul National University

Kuvaus

In this article, oxidation processes of Ag-Bi-Sb-based phases were investigated. Synthesized AgBiS 2 and AgSbS 2 -Sb 2 S 3 -Sb samples were thermally analyzed in synthetic air by applying the simultaneous DSC-TGA analysis technique. The oxidation processes at P O₂ =0.2 atm and T<1173 K were observed to take place in many-step sequence of various reactions with an overall reaction 2AgMeS 2 + 5.5O 2 (g) ⇄ 2Ag + Me 2 O 3 + 4SO 2 (g), where Me=(Bi,Sb). Oxidations of AgBiS 2 , Sb 2 S 3 , and AgSbS 2 were observed to begin above 549±2K, 610±2K, and 733±2K, respectively. Furthermore, oxidation processes of AgBi 3 S 5 and Ag 3 SbS 3 were estimated, and thermodynamic functions for the overall oxidation reactions were calculated and discussed.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut67-78
Sivumäärä12
JulkaisuMineral Processing and Extractive Metallurgy Review
Vuosikerta40
Numero1
TilaJulkaistu - 2 tammikuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 32436190