Correlation of thermal and spectral properties of chromium(III) picolinate complex and kinetic study of its thermal degradation
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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.
KeywordsKinetic Chromium(III) Picolinic acid Thermal Decomposition
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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