Mixed ion-exchanged zeolites and processes for the use thereof in gas separations
US5413625A · kind A · utility
41Cited by
108References
37Claims
0Family size
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Key dates
| Filing date | Dec 17, 1992 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Lithium/alkaline earth metal X zeolites in which the lithium:alkaline earth metal equivalent ratio is from about 95:5 to about 50:50 and lithium/alkaline earth metal A zeolites in which the lithium:alkaline earth metal equivalent ratio is from about 10:90 to about 70:30 are useful for separating oxygen and nitrogen from mixtures because they combine high adsorption capacity with high thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.