Superficially porous metal oxide particles, methods for making them, and separation devices using them
US9284456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Dec 4, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.