Purifying gases with an alkali metal and transition metal containing zeolite
US5374409A · kind A · utility
9Cited by
7References
4Claims
0Family size
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Key dates
| Filing date | Jun 19, 1991 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Jun 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for purifying an exhaust gas using a transition metal-containing zeolite having a high hydrothermal stability having the formula, in terms of a molar composition of oxides: EQU aA.sub.2 O.bM.sub.2/n O.Al.sub.2 O.sub.3.cSiO.sub.2.dH.sub.2 O(I) wherein a is 0.2 to 1.0, b is more than 0 but not more than 1.5, c is at least 10, d is an arbitrary number, A is potassium or cesium, M is a transition metal and n is a valence number of the metal M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.