Chromatographic separations using a unique silica polymorph
US4375568A · kind A · utility
18Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Feb 4, 1981 |
| Grant date | Mar 1, 1983 |
| Priority date | — |
| Expiry date | Feb 4, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/82
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Chromatographic separation of mixtures containing low molecular weight alcohols, ethylene glycol, phenol and water are made in the liquid and gas phase using as a column packing a unique crystalline silica polymorph, synthesized hydrothermally from a reaction system containing silica, water, an alkylonium base and fluoride anions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.