Ionic Conductivity of Nanostructured Hybrid Materials Designed from Imidazolium Ionic Liquids and Kaolinite
| Autor: | Sadok Letaief, Wendy G. Pell, Christian Detellier, Serge I. Gorelsky, Thomas Diaco |
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| Rok vydání: | 2008 |
| Předmět: |
Thermogravimetric analysis
Materials science General Chemical Engineering Inorganic chemistry General Chemistry Conductivity Atmospheric temperature range Dielectric spectroscopy chemistry.chemical_compound chemistry Chemical engineering Electrical resistivity and conductivity Ionic liquid Materials Chemistry Ionic conductivity Hybrid material |
| Zdroj: | Chemistry of Materials. 20:7136-7142 |
| ISSN: | 1520-5002 0897-4756 |
| Popis: | Highly nanostructured hybrid materials were prepared by the intercalation into the interlayer spaces of kaolinite of ionic liquids based on imidazolium derivatives. Their structure, thermal behavior, and composition were characterized by a range of methods, including X-ray diffraction, solid-state NMR, thermal gravimetric analysis, and elemental analysis. Measurements of their electrical conductivity were carried out by impedance spectroscopy in the temperature range 23−250 °C. Three imidazolium derivatives were used: 1-methyl 3-propyl imidazolium bromide (Im-1), 1-methyl 3-(2-chloroethyl) imidazolium cloride (Im-2), and 1-methyl 3-(benzyl) imidazolium chloride (Im-3). The electrical conductivity depends on the size as well as on the structural organization of the salts into the interlayer space. In the case of the intercalates Im-1-K and Im-2-K, the electrical conductivity measured at room temperature is about 2 × 10−5 S cm−1. This value varies with temperature. The maximum of conductivity, 4 × 10−4 S cm... |
| Databáze: | OpenAIRE |
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