M. AMINA Raghdi - Researcher Profile

Department

Departement of Chemistry

Research Interests

Specialized in Departement of Chemistry. Focused on academic and scientific development.

Contact Info

University of M'Sila, Algeria

Email : amina.raghdi@univ-msila.dz

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Recent Publications

2024-11-09

Investigation of halloysite thermal decomposition through differential thermal analysis (DTA): Mechanism and kinetics assessment

The study focused on analysing the kinetics of halloysite decomposition using the differential thermal analysis (DTA) technique. Tests were carried out across a temperature span from ambient temperature to 1673 K, employing heating rates spanning from 5 to 20 °C.min−1. X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR) were utilized to identify the phases formed at different temperatures. Activation energies for halloysite decomposition were determined through isothermal and non-isothermal treatments, yielding values of approximately 151.68 kJ mol−1 and 173.14 kJ mol−1, respectively. The Ligero method's Avrami constant parameter (m) and the Matusita method's numerical factor parameter ( n), linked to crystal growth dimensions, were both around 1.5. These findings indicate that the degradation of halloysite is primarily governed by bulk nucleation, succeeded by the 3-dimensional growth of meta-halloysite characterized by polyhedron-like structure, regulated by diffusion from a consistent number of nuclei. The frequency factor for halloysite dehydroxylation was established at 8.48 × 10⁸ s⁻1.

Citation

M. AMINA Raghdi, Mohammed Rasheed, , (2024-11-09), "Investigation of halloysite thermal decomposition through differential thermal analysis (DTA): Mechanism and kinetics assessment", [international] 4th International Conference on Scientific and Academic Research on 19-20 July in 2024 at , ELSEVIER , Konya/Turkey.

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