Superficially Porous Hybrid Monoliths with Ordered Pores and Methods of Making and using same
OwnerTa-Chen Wei, William E. Barber +1inventors
InventorsTa-Chen Wei, William E. Barber, Kunqiang Jiang
Life of this patent
Estimating the term…
Abstract
The invention provides superficially porous metal oxide or hybrid metal oxide monoliths with ordered pore structures. The superficially porous hybrid silica monoliths of the invention provide several major advantages over existing silica monoliths. When used in chromatography, the superficially porous hybrid silica monoliths of the invention deliver fast separation at very low back pressure and possess superb pH stability and much improved mechanical strength.
Claims20
A porous monolith, comprising:
- an organically modified solid skeleton comprising continuous macropores;
- and
- a substantially porous outer shell comprising substantially ordered mesopores, wherein both the skeleton and the outer shell are independently metal oxide or hybrid metal oxide;
- and wherein the metal oxide is selected from silica, alumina, titania and zirconia.
A method for preparing substantially metal oxide or hybrid metal oxide monoliths, comprising:
- providing macroporous monoliths with solid skeleton;
- and
- heating the macroporous monoliths in a basic aqueous environment in the presence of one or mixed surfactants at a pH and for a time sufficient to create porous outer shells thereon having substantially ordered mesopores.
Dependencies are inferred from the claim text.