Synthesis and properties of porous silica obtained by the template method |
| |
Authors: | T F Kuznetsova A I Rat’ko S I Eremenko |
| |
Institution: | 1. Institute of General and Inorganic Chemistry, Belarus National Academy of Sciences, Minsk, Belarus
|
| |
Abstract: | Micromesoporous samples of SiO2 were synthesized by the sol-gel method using tetraethoxysilane as a starting reagent and 1–5 wt % cetylpyridinium chloride as a template under the conditions of preadsorption of colloid silica by polyethyleneglycol macromolecules. The adsorption and texture of the samples were studied by the low-temperature nitrogen adsorption-desorption technique. Preadsorption of silica sol was shown to affect the adsorption and capillary-condensation properties of silica. The surface area and the volume of mesopores increased at cetylpyridinium concentrations higher than 1 wt %. The micropore volume increased to a maximum. The capillary-condensation hysteresis loop of H4 type transformed into an H3 loop according to the IUPAC classification. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |