English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Highly microporous monodisperse silica spheres synthesized by the Stöber process

MPS-Authors
/persons/resource/persons58414

Bazula,  Piotr
BASF Construction Solutions GmbH, D-83308 Trostberg, Germany.;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons58401

Arnal,  Pablo
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Centro de Tecnología de Recursos Minerales y Cerámica, Camino Centenario y 506, CC 49 (B1897ZCA), M.B. Gonnet, La Plata, Argentina.;

/persons/resource/persons58560

Galeano Nunez,  Diana Carolina
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
BASF SE, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, Germany.;

/persons/resource/persons59145

Zibrowius,  Bodo
Service Department Farès (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons58966

Schmidt,  W.
Research Group Schmidt, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons58985

Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Bazula, P., Arnal, P., Galeano Nunez, D. C., Zibrowius, B., Schmidt, W., & Schüth, F. (2014). Highly microporous monodisperse silica spheres synthesized by the Stöber process. Microporous and Mesoporous Materials, 200, 317-325. doi:10.1016/j.micromeso.2014.07.051.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-3BE5-E
Abstract
Silica spheres that are prepared by the Stöber process are usually considered non-porous. Here we report on a slightly modified synthesis protocol that allows preparation of microporous Stöber particles. Successive treatment with water and alcohol at room temperature results in substantial reorganization of the silica within the Stöber particles. Hydrolysis of alkoxy groups as well as condensation and re-esterification of silanol groups upon re-immersion in alcohol are crucial for that process. As the result of the silica reorganization, micropore channels are formed within the particles. After a final washing with water to remove all alkoxy groups from the particles, pure microporous silica spheres are obtained. The total pore volumes of these materials are comparable to those of zeolitic materials.