Zincoaluminosilicates of the FAU structure
US5997841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition of matter represented by the formula EQU M.sup.n+.sub.(2x+y)/n [Si.sub.(2-x-y) Al.sub.(y) Zn.sub.(x) ]O.sub.4 ; wherein PA1 M is cation selected from Groups 1, 2, 7, 10, 11, 12 and the f block elements as defined by the Periodic Table of the elements as adopted by IUPAC; n is the valence of the selected cation; M; x is greater than or equal to 0.02 but less than or equal to 1; PA1 y is a value less than or equal to 0.98; and 2x+y is greater than or equal to 0.80; PA1 wherein the composition of matter has the FAU structure. The compositions have utility as gas separation adsorbents in processes for separating oxygen from nitrogen in air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.