Anion Effect on the Adsorption of 1-(Hydroxyethyl)-3-Methylimidazolium Chloride, Sulfate and Dihydrogenophosphate Ionic Liquids onto NA-Exchanged Montmorillonite: Structural, Thermal and Dielectric Analysis
Year: 2024
Type: article
Abstract: Our research described in this paper investigated ionic liquids (ILs) adsorption of various anions into Na-montmorillonite (Mt-Na) natural clay and the clay that had been modified chemically for environmental purposes. The ensuing nanocomposites were subjected to structural, thermal and dielectric analysis for further characterization, such as nuclear magnetic resonance (NMR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermo-gravimetric analysis (TGA) methods. Both Mt-Na and the ILs exhibited distinctive IR vibrational bands. TGA confirmed the immobilization of organic cations in the matrix, creating a thermally stable nanocomposite that could withstand 360 °C. In addition, the type of anion significantly affected the Mt’s IL content. Furthermore, our dielectric and conductivity investigations showed that the nanocomposite’s dielectric properties and alternating current (AC) conductivity were affected by the anion and IL content incorporated into the Mt clay. Additionally, it was found that these properties followed the same anion sequence as the loading of ILs into Mt: Cl > HSO4 > H2PO4.
Institutions: Université des Sciences et de la Technologie d'Oran Mohamed Boudiaf, Tissemsilt University, Université IBN Khaldoun Tiaret, University of Abou Bekr Belkaïd, Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques, École Nationale Polytechnique d'Oran, Université Ibn Khaldoun, Amar Telidji University of Laghouat, Centre National de la Recherche Scientifique, Institut des Sciences Chimiques de Rennes, École Nationale Supérieure de Chimie de Rennes, University Yahia Fares of Medea, Université de Rennes, Newcastle University
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4405290152