Ordered mesoporous materials
- The present work is concerned with three important aspects of ordered mesoporous materials: 1. the removal of the liquid crystal template employed, 2. the framework structure and composition, and 3. the morphology of mesoporous silica fibers. The removal of the template by calcination is studied by combining high temperature X-ray diffraction, thermogravimetry, differential thermal analysis and mass spectrometry, allowing \(\textit {in situ}\) investigations. Comparison is made between materials based on silica, titania and zirconia. The synthesis of the first porous mesostructured zirconium oxo-phosphate with cubic (IaOd) symmetry is presented. The effects of alcohols and amines as co-surfactants on the mesoscopic ordering of mesoporous silica are described. The internal circular structure revealed for spontaneously grown mesoporous silica fibers is generalized, and detailed characterization and kinetic studies are provided.
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| Author: | Freddy KleitzGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-5004 |
| Subtitle (English): | template removal, frameworks and morphology |
| Referee: | Ferdi SchüthGND, Wolfgang GrünertGND, Matthias EppleGND |
| Document Type: | Doctoral Thesis |
| Language: | English |
| Date of Publication (online): | 2003/03/18 |
| Date of first Publication: | 2003/03/18 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Granting Institution: | Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie |
| Date of final exam: | 2002/04/17 |
| Creating Corporation: | Fakultät für Chemie und Biochemie |
| GND-Keyword: | Zeolith M41S; Calcinieren; Siliziumdioxid; Tensid; Übergangsmetall |
| Institutes/Facilities: | Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr / Abteilung für heterogene Katalyse |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| faculties: | Fakultät für Chemie und Biochemie |
| Licence (German): |  Keine Creative Commons Lizenz - es gelten der Veröffentlichungsvertrag und das deutsche Urheberrecht |
