Selective chromatographic process using an ion-exchanged, dehydrated chabazite adsorbent
US4747854A · kind A · utility
12Cited by
19References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1987 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Jun 25, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the selective adsorption and separation of one or more constituents from a gas stream in a gas chromatograph, wherein the gas stream is contacted with a dehydrated chabazite adsorbent having a residual water content of less than 1.5 wt % and having at least 50% of any exchangeable ion capacity exchanged with a polyvalent metal cation. The process of the present invention both anticipates separation of the constituents due to either a difference in the heats of adsorption of the constituents or a size exclusion effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.