|
|||||
|
|
Study of the influence factors on the synthesis of Fe-MCM-48 with binary mixed cationic and anionic surfactants |
|
| Authors: | Wei Zhao Lingdong Kong Yunfei Luo Quanzhi Li |
| Affiliation: | aDepartment of Chemistry, Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, PR China bResearch Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China |
| Abstract: | Highly ordered Fe-MCM-48 was synthesized by a mixed template method under low molar ratio (0.17:1) of mixed surfactants to silica. The effect of various factors, such as Fe sources, the amount of Fe salt, Si sources, surfactant/SiO2, crystallization temperature and crystallization time on the synthesis were discussed in detail. The Debye-Huckel theory, the theory of salts formation, the local effective surfactant packing parameter theory and the charge balance theory were used to explain the reason that various factors can affect the product structure reasonably. The optimum synthesis conditions for Fe-MCM-48 were obtained. |
| Keywords: | Fe-MCM-48 Hydrothermal synthesis Mixed surfactants Crystallization Mesoporous materials |
| 本文献已被 ScienceDirect 等数据库收录！ | |