Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Solvothermal removal of the organic template from L3 (``sponge'') templated silica Daniel M. Dabbs1
 

Summary: Solvothermal removal of the organic template from L3 (``sponge'') templated silica
monoliths
Daniel M. Dabbs1
, Norbert Mulders2
and Ilhan A. Aksay1,
*
1
Department of Chemical Engineering, Princeton University, Princeton, NJ, 08544, USA; 2
Department of
Physics and Astronomy, University of Delaware, Newark, DE, 19716, USA; *Author for correspondence
(Tel.: +1-609-2584393; Fax: +1-609-2586835; E-mail: iaksay@princeton.EDU)
Received 26 April 2005; accepted in revised form 8 December 2005
Key words: nanostructured ceramics, high surface area silica, extraction, supercritical solvent, synthesis
Abstract
We compare the methods of continuous solvent (Soxhlet) and supercritical solvent extractions for the
removal of the organic template from nanostructured silica monoliths. Our monoliths are formed by
templating the L3 liquid crystal phase of cetylpyridinium chloride in aqueous solutions with tetramethoxy
silane. The monoliths that result from both Soxhlet and supercritical extraction methods are mechanically
robust, optically clear, and free of cracks. The Soxhlet method compares favorably with supercritical
solvent extraction in that equivalent L3-templated silica can be synthesized without the use of specialized

  

Source: Aksay, Ilhan A. - Department of Chemical Engineering, Princeton University

 

Collections: Materials Science