Patent ID: 7067687
Filing Date: 2006-06-27
Classification: B01J,C01B

Abstract:
1. A mesostructured, microporous to mesoporous organofunctional silica composition as a spherical particle or a thin film wherein a framework for the composition is comprised of at least two units selected from the group consisting of LSiO 3 ,SiO 4 , and O 3 Si—R—SiO 3 linked through bridging Si—O—Si bonds, wherein L is an organofunctional group bonded to one silicon atom through a silicon-carbon covalent bond, R is an organo group linked to two silicon centers through silicon-carbon covalent bonds; wherein at least 80% of the silicon atoms in the LSiO 3 and O 3 Si—R—SiO 3 units are crosslinked through bridging oxygen atoms to three other silicon atoms in the framework; and wherein the composition exhibits at least one x-ray diffraction line corresponding to a lattice spacing between about 1.8 nm and 10 nm.