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://ucris.univie.ac.at/portal/de/publications/porous-silicabased-mixed-oxides-with-basic-organic-sites-prepared-by-sequential-nonhydrolytic-and-hydrolytic-solgel-processes(d4f57d06-7904-4297-956b-08f4e5dae756).html