Method and apparatus for improved gettering for reactant gases
US4564509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1983 |
| Grant date | Jan 14, 1986 |
| Priority date | — |
| Expiry date | Jun 30, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of removing oxygen and water vapor and other oxygen bearing gas species from reactant gases comprising the use of an appropriate solution containing an active gettering metal, selected from the group of aluminum, magnesium, calcium and lithium in liquid phase through a moderate temperature range, including room temperature and above as an oxygen gettering step, through the formation of an oxide of said metal wherein the said metal becomes continuously available for oxidation by exposing the said unreacted metal to the gas by bubbling the reactant gas through a ternary melt of gallium-indium and the said metal in a nonreactive container and maintaining in solid phase an excess of the active gettering method so that the capacity for removing the oxygen and water vapor and other oxygen bearing gas species may be extended by the active metal going into solution in the melt from the solid as the metal oxide is formed and goes out of solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.