de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Controlled solubilization of toluene by silicate-catanionic surfactant mesophases as studied by in situ and ex situ XRD

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons58385

Ågren,  P.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58472

Bussian,  P.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58760

Lindén,  M.
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
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

Lind, A., Andersson, J., Karlsson, S., Ågren, P., Bussian, P., Amenitsch, H., et al. (2002). Controlled solubilization of toluene by silicate-catanionic surfactant mesophases as studied by in situ and ex situ XRD. Langmuir, 18(4), 1380-1385. doi:10.1021/la011240a.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-9A1F-F
Abstract
Mesoscopically ordered silicate-surfactant composite materials of the M41S type synthesized in the presence of a swollen agent have been characterized by in situ and ex situ X-ray diffraction analysis. The key feature of the room-temperature synthesis is the use of a mixture of cationic and anionic surfactants as structure-directing agents. The lower interfacial charge density of the mixed surfactant aggregates stabilizes structures of lower interfacial curvature and therefore facilitates a more controlled solubilization of organic swelling agents. An increased solubilization capacity of the catanionic surfactant-silicate mesophase was observed close to an anionic/cationic surfactant ratio corresponding to a transition to the lamellar phase in the absence of toluene. In the presence of toluene, the catanionic template stabilizes microemulsion droplets that serve as building blocks for the final material. However, a fair amount of organic compound is solubilized in the silica-catanionic surfactant composite after the mesophase is formed. Although the present communication concerns mesoporous silica, the concept is a general one and may allow the synthesis of non-siliceous large-pore materials.