Formation mechanism of strontium cobaltite containing equimolar amounts of Sr and Co from SrCO3 and Co3O4

ASLAN C., KALPAKLI A. O.

THERMOCHIMICA ACTA, vol.710, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 710
  • Publication Date: 2022
  • Doi Number: 10.1016/j.tca.2022.179179
  • Journal Name: THERMOCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Analytical Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Strontium cobaltite, Perovskite, Thermal analysis, Solid-state reaction, OXYGEN NONSTOICHIOMETRY, TRANSPORT-PROPERTIES, MAGNETIC-PROPERTIES, PHASE-TRANSITIONS, SRCOO3-DELTA, SR2CO2O5, BROWNMILLERITE, SR6CO5O15, SRCOO2.5
  • Istanbul University Affiliated: No

Abstract

Strontium cobaltite containing equimolar amounts of Sr and Co was produced by heating the mixture of SrCO3 and Co3O4 starting materials with a mole ratio of 1:0.333 under dynamic air atmosphere. The chemical reactions occurred during heating were determined and the intermediate and final products obtained at each critical temperature were characterized using TG/DTA-MS, ICP-OES, XRD and FT-IR analytical techniques. The volumetric analysis method (iodometric titration) and carbonation process were carried out to determine the oxygen stoichiometry of strontium cobaltite.