Large pore volume composite mineral oxide beads, their preparation and their applications for adsorption and chromatography
US6613234B2 · kind B2 · utility
39Cited by
9References
61Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 22, 1999 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Oct 18, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides porous mineral oxide beads which have large pore volumes and enhanced stability. The beads are based on a tetravalent metal oxide, such as zirconia, titania or hafnia. These highly porous beads are produced from a mixture of tetravalent mineral oxides, mineral pore inducing agents which are oxides or salts of trivalent metals, and optional binders. The porous mineral beads can be filled with a polymer gel and used for adsorption and chromatography applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.