Material with a hierarchical porosity comprising silicon
US7994085B2 · kind B2 · utility
19Cited by
5References
17Claims
0Family size
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Key dates
| Filing date | Jun 24, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Sep 17, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A material with a hierarchical porosity is described, constituted by at least two spherical elementary particles, each of said spherical particles comprising zeolitic nanocrystals having a pore size in the range 0.2 to 2 nm and a matrix based on silicon oxide, which is mesostructured, having a pore size in the range 1.5 to 30 nm and having amorphous walls with a thickness in the range 1 to 20 nm, said spherical elementary particles having a maximum diameter of 10 μm. the matrix based on silicon oxide may contain aluminium. The preparation of said material is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.