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Lyotropic liquid crystalline L3 phase silicated nanoporous monolithic composites and their production

United States Patent

October 28, 2003
View the Complete Patent at the US Patent & Trademark Office
A mesoporous ceramic material is provided having a pore size diameter in the range of about 10-100 nanometers produced by templating with a ceramic precursor a lyotropic liquid crystalline L.sub.3 phase consisting of a three-dimensional, random, nonperiodic network packing of a multiple connected continuous membrane. A preferred process for producing the inesoporous ceramic material includes producing a template of a lyotropic liquid crystalline L.sub.3 phase by mixing a surfactant, a co-surfactant and hydrochloric acid, coating the template with an inorganic ceramic precursor by adding to the L.sub.3 phase tetramethoxysilane (TMOS) or tetraethoxysilane (TEOS) and then converting the coated template to a ceramic by removing any remaining liquids.
McGrath; Kathryn M. (Princeton, NJ), Dabbs; Daniel M. (Princeton, NJ), Aksay; Ilhan A. (Princeton, NJ), Gruner; Sol M. (Ithaca, NY)
The Trustees of Princeton University (Princeton, NJ)
09/ 424,029
April 3, 2000
GOVERNMENT LICENSE RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided by the terms of Grant DAAH04-95-1-0102) awarded by the U.S. Army Research Office, Grant DE-FG02-87ER60522 awarded by the Department of Energy and MRSEC Program of the National Science Foundation (DMR-940032).