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Journal of Thermal Analysis and Calorimetry

, Volume 117, Issue 2, pp 993–1000 | Cite as

Correlation of thermal and spectral properties of chromium(III) picolinate complex and kinetic study of its thermal degradation

  • Zeinab M. Abou-Gamra
  • Michel F. Abdel-Messih
Article

Abstract

Chromium(III) picolinate complex, namely [Cr(pic)3]·H2O, was prepared and characterized by the methods of the elemental analysis, infrared spectroscopy, X-ray diffraction, and thermal analysis (TG/DTG, DTA). The correlation of the thermal and spectral properties of the complex with its structure is discussed in the study. The correlation of the spectral data with the structure leads to the accord, and coherence was found between thermal properties and structure of the complex for both steps of the thermal decomposition (dehydration and pyrolysis of organic ligand). Activation parameters were evaluated using the theory of absolute reaction rate.

Keywords

Kinetic Chromium(III) Picolinic acid Thermal Decomposition 

Notes

Acknowledgements

The authors are grateful to M.S. Al-Kotb, Physics Department, Faculty of Science, Ain Shams University, Egypt, for his helpful discussion of theoretical X-ray.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Zeinab M. Abou-Gamra
    • 1
  • Michel F. Abdel-Messih
    • 1
  1. 1.Chemistry Department, Faculty of ScienceAin Shams UniversityAbbassia, CairoEgypt

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