Comparative thermogravimetric study of chlorinations of hematite and wustite

I. Bertóti, I. S. Pap, T. Székely, I. Z. Babievskaya

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Abstract

The reactions of hematite and wustite with Cl2, COCl2, CO+Cl2 and gaseous CCl4 were studied by thermogravimetry, X-ray diffraction and computer-assisted thermodynamic calculations. During the chlorination of hematite, only gaseous products were formed. The apparent activation energies were calculated from the isothermal TG curves. The chlorination of wustite involves the formation and transformation of a series of solid chloride products. FeCl2(s), FeCl3(s) and FeOCl(s) were found as intermediates during chlorination with Cl2 or Cl2+CO, while only FeCl2(s) was detected in reactions with COCl2 oe CCl4. The chlorinations of the iron oxides with various agents were compared, and the differences in reactivity sequences were established.

Original languageEnglish
Pages (from-to)281-292
Number of pages12
JournalJournal of thermal analysis
Volume32
Issue number1
DOIs
Publication statusPublished - Jan 1 1987

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)

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