Publikationen

Porous Silica-based Mixed Oxides with Basic Organic Sites Prepared by Sequential Non-Hydrolytic and Hydrolytic Sol-gel Processes

Autor(en)
Jasmin Geserick, Sarah Meyer, Michael Puchberger, Silvia Pabisch, Herwig Peterlik, Ole Bethge, Emmerich Bertagnolli, Ulrich S. Schubert
Abstrakt

Porous, organically modified silica-based mixed oxides were prepared in a two-step process. First, a mixture of tetraethoxysilane, bis(triethoxysilyl)dipropylamine and, optionally, 1,4-bis(triethoxysilyl)benzene was treated with metal chlorides (ZrCl4, TiCl4, or AlCl3), and no water or water-based catalyst was added to the sols. After film formation, the materials were exposed to ambient humidity to achieve hydrolytic condensation of residual groups. Materials with wormhole-like ordered porosity and uniform mesopores were obtained with metal proportions up to about 20?%. According to XPS measurements, the metals are homogenously distributed in the silica matrix.

Organisation(en)
Dynamik Kondensierter Systeme
Externe Organisation(en)
Universität Ulm, Technische Universität Wien, Leopold-Franzens-Universität Innsbruck, Friedrich-Schiller-Universität Jena
Journal
European Journal of Inorganic Chemistry
Band
32
Seiten
5207-5215
Anzahl der Seiten
9
ISSN
1434-1948
DOI
https://doi.org/10.1002/ejic.201200088
Publikationsdatum
2012
Peer-reviewed
Ja
ÖFOS 2012
103009 Festkörperphysik, 103015 Kondensierte Materie, 103018 Materialphysik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/porous-silicabased-mixed-oxides-with-basic-organic-sites-prepared-by-sequential-nonhydrolytic-and-hydrolytic-solgel-processes(d4f57d06-7904-4297-956b-08f4e5dae756).html