• Infrared study of FeO·OH→Fe2O3 thermal transformation

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      https://www.ias.ac.in/article/fulltext/jcsc/096/05/0315-0320

    • Keywords

       

      ir ; dta ; goethite; thermal transformation

    • Abstract

       

      Infrared absorption spectroscopy has been applied for the identification of the minerals associated with natural goethite (α-FeO·OH) from Saudi Arabia. The thermal transformation of natural goethite as well as the effects of the presence of the associated minerals on the reaction products were investigated. The results revealed that at 300°C protohematite is formed which at 600°C is slightly crystallized. Further recrystallization and hematite formation takes place at 1000°C. It was also found that the presence of other minerals found in goethite samples has no effect on the reaction products.

    • Author Affiliations

       

      M Samira Rabie1 Hajjar Balkees2

      1. Middle Eastern Regional Radioisotopic Centre for the Arab Countries, Sh. Malaeb El-Gamaa, Dokki 11321, Cairo, ARE
      2. Girls’ College of Education in Jeddah, Saudi Arabia
    • Dates

       
  • Journal of Chemical Sciences | News

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