Thomas J. Pinnavaia - East Lansing MI Peter T. Tanev - East Lansing MI Wenzhong Zhang - East Lansing MI Jialiang Wang - East Lansing MI Malama Chibwe - Lansing MI
Assignee:
Board of Trustees operating Michigan State University - East Lansing MI
International Classification:
C01B 3344
US Classification:
423718, 423326, 4233282, 4233291, 423705
Abstract:
A neutral templating route to mesoporous molecular sieves based on H-bonding and self-assembly between neutral primary amine or diamine surfactants (SÂ) and neutral inorganic precursors (IÂ) has been used to prepare hexagonal and lamellar mesoporous silicas with site isolated transition metal centers. This templating approach allows for the preparation of hexagonal or hexagonal-like mesoporous oxidation catalysts with large framework wall thickness of at least about 17 , small elementary particle size (400 ), and unique combinations of framework-confined mesopores and textural mesopores while at the same time providing for facile recovery of the neutral template by simple solvent extraction. The templating of neutral metallosilicate precursors (IÂ) with neutral diamine surfactants (SÂâSÂ) affords thermally stable pillared lamellar metallosilicates exhibiting complementary framework-confined microporosity and textural mesoporosity while at the same time also providing for template recovery by solvent extraction. In addition, a hexagonal transition metal-substituted catalysts, analogous to MCM-41, have been prepared using the mediated S X I templating pathway (Pathway ) and mild reaction conditions.
Quasi Crystalline Inorganic Oxide Compositions Prepared By Neutral Templating Route
Thomas J. Pinnavaia - East Lansing MI Wenzhong Zhang - East Lansing MI Thomas R. Pauly - Lansing MI Peter T. Tanev - Katy TX
Assignee:
Board of Trustees of Michigan State University - East Lansing MI
International Classification:
C01B 3338
US Classification:
502 74, 423277, 423326, 423705
Abstract:
Crystalline inorganic oxide compositions having regular wormhole-like channels are described. The formation of the mesoporous composition is accomplished by hydrogen bonding between a neutral amine template in water and a water miscible organic solvent and a neutral inorganic oxide precursor, wherein there is an excess of an alkanol or water used to dissolve the template. The template can be removed and recycled.
Catalytic Applications Of Mesoporous Metallosilicate Molecular Sieves And Methods For Their Preparation
Thomas J. Pinnavaia - East Lansing MI Peter T. Tanev - Houston TX Ying Liang - Lake Zurich IL
Assignee:
Board of Trustees of Michigan State University - East Lansing MI
International Classification:
C01B 3338
US Classification:
502167, 502240, 423326
Abstract:
A neutral templating route to mesoporous molecular sieves based on H-bonding and self-assembly between neutral primary amine or diamine surfactants (SÂ) and neutral inorganic precursors (IÂ) has been used to prepare hexagonal and lamellar mesoporous silicas with site isolated transition metal centers. The templating of neutral metallosilicate precursors (IÂ) with neutral diamine surfactants (SÂâSÂ) affords thermally stable pillared lamellar metallosilicates exhibiting complementary framework-confined microporosity and textural mesoporosity while at the same time also providing for template recovery by solvent extraction. These new mesoporous metallosilicate molecular sieves exhibit exceptional catalytic activity for peroxide hydroxylation of benzene and oxidation of substituted aromatics with kinetic diameters that are too large (larger than 6 ) to access the pore structure of the conventional microporous transition metal-substituted molecular sieves such as titano- and vanadosilicates.
Hybrid Mixed Ion Clay Structures For Polymer Nanocomposite Formation
Thomas J. Pinnavaia - East Lansing MI Zhen Wang - Palatine IL
Assignee:
Board of Trustees of Michigan University - East Lansing MI
International Classification:
C08K 334
US Classification:
524445, 524186, 524431, 501148
Abstract:
Hybrid layered silicates with galleries between the layers containing both inorganic and organic ions with different compositions in different galleries are described. The resulting hybrid layered silicates provide economical starting materials for polymers and the like.
Combined Porous Organic And Inorganic Oxide Materials Prepared By Non-Ionic Surfactant Templating Route
A method for preparing synthetic, semi-crystalline, porous inorganic oxide composition containing a reactive organic silane moiety which is on the surface of pore walls. The composition is prepared from a poly(oxyalkylene) based surfactant and a hydrolyzable organic silane. The surfactant is preferably a poly(ethylene) oxide, a poly(propylene) oxide polymer or mixtures thereof. The organic silane is preferably mercaptopropylsilane. The compositions are particularly useful as adsorbents, and catalysts.
Thomas J. Pinnavaia - East Lansing MI Thomas R. Pauly - Lansing MI
Assignee:
Board of Trustees of Michigan State University - East Lansing MI
International Classification:
B32B 300
US Classification:
4283126, 4283122, 423335, 423339
Abstract:
Porous inorganic silica foam compositions are derived from water soluble silicate precursors and swollen non-ionic polymer templates are described. The compositions are useful as catalyst supports and as catalysts in hydrocarbon cracking and organic reactions, among other applications.
Ultra-Stable Lamellar Mesoporous Silica Compositions And Process For The Prepration Thereof
Thomas J. Pinnavaia - East Lansing MI Wenzhong Zhang - Tulsa OK
Assignee:
Board of Trustees of Michigan State University - East Lansing MI
International Classification:
C01B 3316
US Classification:
423335
Abstract:
Novel lamellar mesoporous silica compositions which can contain functional inorganic elements and organic functional groups as part of the lamellar silica framework structure are described. The compositions are prepared using gemini amine surfactants as templates or structure directing agents. The compositions have novel high temperature and hydrothermal stability and unique fundamental particle structures.
Ultrastable Hexagonal, Cubic And Wormhole Aluminosilicate Mesostructures
Thomas J. Pinnavaia - East Lansing MI Wenzhong Zhang - Broken Arrow OK Yu Liu - East Lansing MI
Assignee:
Board of Trustees operating Michigan State University - East Lansing MI
International Classification:
C01B 3326
US Classification:
423702, 423705, 4233281, 4233282
Abstract:
Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam) The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.
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