Gas separation with lithium-containing ZSM-2 metallosilicates
US5779766A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Apr 23, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40052
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is a method of selective adsorptively separating nitrogen from oxygen using a crystalline metallosilicate having a ZSM-2 structure with a Si/Al ratio less than 2.0 and a lithium cation exchange of at least 50%, wherein the composition has the chemical formula: EQU M.sub.2/n O:X.sub.2 O.sub.3 :(2.0 to <4.0)SiO.sub.2 wherein M=one or more metal cations having a valence of n, and X is selected from the group consisting of aluminum, gallium and boron, preferably aluminum. The method is conducted at a bed temperature in the range of approximately -100.degree. C. to 100.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.