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Journal of thermal analysis

, Volume 34, Issue 4, pp 975–981 | Cite as

Thermal decomposition of aluminium-bearing compounds

  • N. G. Apte
  • E. Kiran
  • J. V. Chernosky
Article

Abstract

The thermal decomposition of aluminium sulfate, potassium aluminium sulfate, ammonium aluminium sulfate and alunite have been studied by dynamic thermogravimetry and X-ray diffraction. Specifically, the factors that affect the sulfate decomposition reaction have been investigated. The sulfate decomposition is found to be significantly influenced by the presence of an inert material such as potassium sulfate in the solid matrix.

Keywords

Sulfate Thermal Decomposition Thermogravimetry Decomposition Reaction Solid Matrix 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Mittels dynamischer Thermogravimetrie und Röntgendiffraktionsverfahren wurde der thermische Zerfall von Aluminiumsulfat, Kaliumaluminiumsulfat, Ammoniumaluminiumsulfat und Alaunstein untersucht. Es wurden insbesondere diejenigen Faktoren untersucht, die die Zersetzungsreaktion der Sulfate beeinflussen. Es konnte nachgewiesen werden, daß die Sulfatezersetzung durch die Gegenwart von inerten Materialien, z. B. von Kaliumsulfat in der Festkörpermatrix eindeutig beeinflusst wird.

Резюме

С помощью динамическ ой термогравиметрии и рентгено-диффракцио нного анализа изучено термическое разложение сульфата алюминия, калийалюминий сульф ата, аммонийалюминий сульфата и алунита. Де тально исследованы ф акторы, затрагивающие реакц ию разложения сульфата. Найдено, что разложен ие сульфата в значительной степе ни затрагивается присутствием в тверд ой матрице какого-либ о инертного вещества, как наприме р, сульфата калия.

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References

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Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1988

Authors and Affiliations

  • N. G. Apte
    • 1
  • E. Kiran
    • 1
  • J. V. Chernosky
    • 1
    • 2
  1. 1.Department of Chemical EngineeringUniversity of MaineOronoUSA
  2. 2.Department of Geological SciencesUniversity of MaineOronoUSA

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