Ultraporous sol gel monoliths
AssigneeVarian, Inc.
InventorDengfeng Xu
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Abstract
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.
Claims21
An ultraporous sol gel monolith, wherein the sol gel monolith is characterized by having a total porosity of up to about 97% and substantially no pores with diameters less than about 2.0 nm.
A method for forming an ultraporous sol-gel monolith lacking pores with diameters less than about 2.0 nm comprising
- (a) forming an aqueous solution comprising a porogen, a catalyst comprising a matrix dissolving agent and a sol gel precursor;
- (b) allowing the solution to form a gel;
- and
- (c) drying the gel at an elevated temperature.
Dependencies are inferred from the claim text.