Ultraporous sol gel monoliths

Details Ultraporous sol gel monoliths Ultraporous sol gel monoliths

B - Operations, Transporting

01

J

B01J 20/28 (2006.01) B01J 20/282 (2006.01) B01J 20/286 (2006.01)

Patent

CA 2590779

Ultraporous sol gel monoliths and methods for preparing the same are provided, having superior flow characteristics for chromatography and analytical chemistry applications. The methods for forming an ultra porous sol-gel monolith include (a) forming a solution comprising a porogen, a matrix dissolving catalyst and a sol gel precursor; (b) allowing the solution to form a gel; and (c) drying the gel at an elevated temperature. The ultraporous sol gel monoliths are characterized by a porosity of up to about 97%, a BET surface area of at least about 50 m2/g and substantially no micropores.

L'invention concerne des monolithes sol-gel ultraporeux et leurs procédés de préparation, lesdits monolithes sol-gel ultraporeux possédant des caractéristiques d'écoulement supérieures pour des applications en chromatographie et en chimie analytique. Les procédés de préparation d'un monolithe sol-gel ultraporeux consistent à (a) former une solution renfermant un porogène, un catalyseur de dissolution de matrices et un précurseur sol-gel ; (b) transformer la solution en gel ; et (c) sécher le gel à une température élevée. Les monolithes sol-gel ultraporeux se caractérisent par une porosité pouvant atteindre environ 97 %, par une surface active BET d'au moins environ 50 m2/g et par la quasi-absence de micropores.

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