<abstract xmlns="http://www.w3.org/1999/xhtml">This work had the objective to analyze the thermodynamic properties of cadmium doped cobalt zinc ferrite (Co0.5Zn0.5Cd0.3Fe1.8O4), obtained by solid state reaction method and characterized by TGA-DTA. The TG analysis show sharp peaks at four points, two for water reduction, one for decomposition of chlorides and last one for formation of end product. The ratio of weight of end product to starting material match with ratio of molecular weight of end product and starting materials; this confirms the formation of ferrite sample. Broido, Coats-Redfern, Chang and Horowitz-Metzger approximations are employed to compute the activation energy (<italic>E</italic>a) of formation of ferrite sample. The kinetic parameters like frequency factor (<italic>A</italic>), entropy change (Δ<italic>S</italic>), enthalpy change (Δ<italic>H</italic>) and changes in internal energy (Δ<italic>G</italic>) of sample are also reported.</abstract>

This work had the objective to analyze the thermodynamic properties of cadmium doped cobalt zinc ferrite (Co0.5Zn0.5Cd0.3Fe1.8O4), obtained by solid state reaction method and characterized by TGA-DTA. The TG analysis show sharp peaks at four points, two for water reduction, one for decomposition of chlorides and last one for formation of end product. The ratio of weight of end product to starting material match with ratio of molecular weight of end product and starting materials; this confirms the formation of ferrite sample. Broido, Coats-Redfern, Chang and Horowitz-Metzger approximations are employed to compute the activation energy (Ea) of formation of ferrite sample. The kinetic parameters like frequency factor (A), entropy change (ΔS), enthalpy change (ΔH) and changes in internal energy (ΔG) of sample are also reported.

The evaluation of kinetic parameters for cadmium doped Co-Zn ferrite using thermogravimetric analysis

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This work had the objective to analyze the thermodynamic properties of cadmium doped cobalt zinc ferrite (Co0.5Zn0.5Cd0.3Fe1.8O4), obtained by solid state...

The evaluation of kinetic parameters for cadmium doped Co-Zn ferrite using thermogravimetric analysis

Publié en ligne: 10 juin 2019

Pages: 60 - 64

Reçu: 17 janv. 2019

Accepté: 15 mai 2019

DOI: https://doi.org/10.2478/auoc-2019-0011

Mots clés
cadmium doped cobalt zinc ferrites (CoZnCdFeO), TG-DTA, activation energy, frequency factor

© 2019 Akshay B. Kulkarni et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The evaluation of kinetic parameters for cadmium doped Co-Zn ferrite using thermogravimetric analysis

Publié en ligne: 10 juin 2019

Pages: 60 - 64

Reçu: 17 janv. 2019

Accepté: 15 mai 2019

DOI: https://doi.org/10.2478/auoc-2019-0011

Mots cléscadmium doped cobalt zinc ferrites (CoZnCdFeO), TG-DTA, activation energy, frequency factor

© 2019 Akshay B. Kulkarni et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
cadmium doped cobalt zinc ferrites (CoZnCdFeO), TG-DTA, activation energy, frequency factor