Superficially porous metal oxide particles, methods for making them, and separation devices using them

Abstract

Superficially porous hybrid particles include hybrid solid cores that each contain an inorganic material and an organic material; and porous hybrid outer shells each include the inorganic and organic materials and having ordered pores, wherein the ordered pores have a median pore size ranges from about 15 to about 1000 Å with a pore size distribution (one standard deviation) of no more than 50% of the median pore size and produce at least one X-ray diffraction peak between 0.01° and 10° of a 2θ scan range; wherein the particles have a median size range from about 0.5 μm to about 100 μm with a particle size distribution (one standard deviation) of no more than 15% of the median particle size, wherein the inorganic material comprises a metal oxide selected from silica, alumina, titania or zirconia.

Dependencies are inferred from the claim text.