Basic alkali metal-zeolite compositions
US5194244A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1989 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to basic compositions comprising a zeolite and an alkali metal compound wherein the sum of the amount of the alkali metal in the compound plus any metal cation exchanged into the zeolite is in excess of that required to provide a fully metal cation-exchanged zeolite. This invention further relates to methods for preparing the instant compositions. In a preferred embodiment the instant compositions are prepared by impregnating a zeolite with a solution of an alkali metal salt wherein said alkali metal impregnated in the zeolite is in excess of that required to exchange out the ion exchangable sites present in the zeolite, drying the resultant impregnated material and then calcining the resultant composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.