Preparation of aerogel beryllium borate with supercritical carbon dioxide drying |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;2. Hubei Engineering University, College of Chemistry and Materials Science, Xiaogan 430205, China;3. The first affiliated hospital of Gannan Medical University, Ganzhou 341000, China;1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;2. Shanghai Applied Radiation Institute, Shanghai University, Shanghai 201800, China |
| |
| Abstract: | A supercritical carbon dioxide drying technique was developed to prepare nanometer particulate materials. The technique consists of preparation of an aqueous gel, filtering, washing, replacement of the water in the gel with a mixture solvent of n-butanol and ligroin and supercritical carbon dioxide drying. The product was characterized with TEM, XRD and X-ray small-angle scattering. The results indicated that an amorphous aerogel of the beryllium borate was obtained with this technique. The diameter of the product particles was about 7 nm. Isopropyl alcohol supercritical drying was also used to prepare aerogel beryllium borate, where recrystallization took place due to the high critical temperature of isopropanol. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
