Catalyst diluent for oxychlorination process
US5202511A · kind A · utility
32Cited by
10References
2Claims
0Family size
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Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Apr 13, 1993 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/156
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alumina is used as a support for the CuCl2 catalyst and as a diluent in the oxychlorination of ethylene. When a low surface area alumina, e.g. high purity alpha-alumina, is used as diluent for the reaction, reduced oxidation and less chlorinated by-products are achieved. Alternatively, the alumina used as the catalyst support, e.g. a gamma-alumina which has a high surface area and higher amounts of impurities, can be used as diluent if it is impregnated with an alkali metal ion, e.g K+ ion, which is usually employed as a salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.