Copper-impregnated zeolite composition
US5488020A · kind A · utility
3Cited by
69References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A composition comprising a copper(I) impregnated aluminosilicate zeolite wherein the zeolite is selected from faujasites, L and .OMEGA., and wherein the zeolite has a silica to bulk alumina molar ratio between about 12 and about 50 and a silica to framework alumina molar ratio of at least about 15. The catalyst preparation involves in the following order: drying the selected zeolite, impregnating the dried zeolite with a copper(II) salt, calcining the copper(II)-impregnated zeolite, and reducing the copper(II) to copper(I). The composition is useful as a catalyst for the cyclodimerization of 1,3-butadiene to 4-vinylcyclohexene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.