| Titre : | Novel one-step synthesis route to ordered mesoporous silica-pillared clay using cationic−anionic mixed-gallery templates (2010) |
| Auteurs : | Mao, Huihui, Auteur ; Li, Baoshan, Auteur ; Li, Xiao, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 2, Janvier 2010) |
| Article en page(s) : | pp 583–591 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Silica-Pillared Micromesoporous X-ray diffraction. |
| Résumé : | A novel one-step synthesis route to ordered mesoporous silica-pillared clay (SPC) with cantonic−anionic mixed-gallery templates has been successfully established. This approach involves the type and formation of surfactant mixture for SPC through intragallery ammonia-catalyzed tetraethoxysilane (TEOS). The formation of a precursor with a micromesoporous framework is a result of TEOS hydrolysis and the presence of surfactant micelles in the gallery regions under ammonia-catalyzed conditions. The type of structure was confirmed by X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and low-temperature N2 physisorption. Addition of the anionic surfactant resulted in changes of the layered structure and ratio of micropores to mesopores. The formation mechanism of SPC derivatives is proposed. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie9011563 |
