Process for preparing modified silver catalysts
US4033903A · kind A · utility
52Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1976 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Apr 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Silver catalysts providing improved selectivities for the oxidation of ethylene to ethylene oxide are prepared by (a) subjecting a catalyst comprising from about 1 to about 35 percent by weight of silver on a porous refractory catalyst support to a stabilization treatment, and (b) depositing from about 0.00004 to about 0.008 gram equivalent weights per kilogram of total catalyst of ions of one or more of the alkali metals potassium, rubidium or cesium on the stabilized catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.