Superficially porous particles with dual pore structure and methods for making the same
US10434496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Nov 10, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/3289
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Superficially porous particles are provided. Aspects of the superficially porous particles include a non-porous inner core and a porous outer shell that includes inner and outer porous regions. The inner porous region can include ordered cylindrical pores substantially perpendicular to the non-porous inner core. The outer porous region can include conical pores which extend to the surface of the particles and which are in fluid communication with the cylindrical pores of the inner porous region. Also provided are methods of making the subject superficially porous particles. Aspects of the methods include subjecting substantially solid inorganic oxide particles to agitation in an aqueous solution in the presence of a first cationic surfactant and a second anionic surfactant, which together form micelles, to pseudomorphically transform the particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.