Biomineral-Silica-Induced Zeolitization of Equisetum Arvense

✍ Scribed by Valentin Valtchev; Monique Smaihi; Anne-Catherine Faust; Loic Vidal

• Book ID: 101534593
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 140 KB
• Volume: 115
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/ange.200351175

✦ Synopsis

The performance of bulk materials often depends on the size and habit of the primary particles, and their ordering into hierarchical structures. In the area of catalysis and separation processes, ordered materials with well-defined periodic structures and controlled sizes are highly desired. Hierarchical porous structures combine the benefits of each pore-size regime and are expected to lead to higher efficiency and new applications in catalytic and separation processes, biomolecular separations, and chromatographic supports. The most commonly used approach for the fabrication of such materials is the application of sacrificial templates, which after the synthesis of the inorganic framework are dissolved or volatilized by heating. The template approach, first employed for the preparation of zeolite-type materials, where small organic molecules are used for directing the microporosity, was extended to the formation of mesoporous and macroporous structures. By employing dual templates, hierarchical porous materials with combinations of micro-/meso-