Silica-containing porous bodies of controlled pore size
US4112032A · kind A · utility
39Cited by
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8Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/901
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to the preparation of silica-containing particulate materials and monolithic structures exhibiting high porosity with exceptionally uniform pore size. The bodies are produced through gelation of aqueous alkali metal silicate and/or colloidal silica solutions, optionally contaiing dispersed particulate phases, with organic reagents followed by a leaching step. Uniformity of pore size is achieved through careful control of such variables as the ratio of alkali metal silicate to colloidal silica solutions, the concentration of silica, the amount of dispersed phase employed, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.