High efficiency sol-gel gas chromatography column
US8685240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2006 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Jan 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/567
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A capillary column (10) includes a tube structure having inner walls (14) and a sol-gel substrate (16) coated on a portion of inner walls (14) to form a stationary phase coating (18) on inner walls (14). The sol solution used to prepare the sol-gel substrate (16) has at least one baseline stabilizing reagent and at least one surface deactivation reagent resulting in the sol-gel substrate (16) having at least one baseline stabilizing reagent residual and at least one surface deactivating reagent residual. A method of making the sol-gel solution is by mixing suitable sol-gel precursors to form the solution, stabilizing the solution by adding at least one baseline stabilization reagent, deactivating the solution by adding at least one surface deactivation reagent to the solution, and reacting the solution in the presence of at least one catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.