| Research on green reaction media is an important field in the green chemistry. Supercritical fluids and ionic liquids are the newly developed green media in recent years. Due to the unique properties of these new green media, they are widely used in organic synthesis, separation, purification and chemical catalysis. Currently, the application of these new green media in the synthesis of nano-micromaterials is still in its initial stage, but the morphology of nano-micromaterials sythsized in the green media has some novel features, which arrests the attention of researchers all around the world.In this thesis, nano-micromaterials with different morphology are successfully synthesized in the green media.1.Using supercritical ethanol as reaction medium, the impact of the triethanolamine(TEA) concentration and reaction time on the morphology of the material is investigated. Possible formation mechanism of the copper microspheres is also proposed.2. New type of ionic liquid--eutectic mixture is chosen as reaction medium andα-Fe2O3 nanoparticles and MnCO3 micron ball are synthesized via ionothermal reaction. Possible formation mechanism of the above nano-micromaterials is discussed.3. Explore the solubility of AOT in the supercritical carbon dioxide. The results suggest that the n-butanol concentration, system temperature and pressure have significant impact on the solubility of AOT in supercritical carbon dioxide.
|
PDF Full Text Request