Zinc cation exchanged lithium X-zeolite for nitrogen adsorption
US5419891A · kind A · utility
22Cited by
20References
9Claims
0Family size
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Key dates
| Filing date | Sep 17, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Sep 17, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to an at least binary exchanged X-zeolite having lithium and zinc cations in a ratio of preferably 5% to 40% zinc and 50% to 95% lithium, wherein the sum of the lithium and zinc ion exchange is at least 65% of the exchangeable ion content. Theses adsorbents are useful in a process for separating nitrogen from gas mixtures containing nitrogen and less strongly adsorbed components such as oxygen, hydrogen, argon or helium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.