Catalysts and processes for the manufacture of vinyl acetate
US5185308A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A shell impregnated catalyst for use in the production of vinyl acetate from ethylene, acetic acid and an oxygen containing gas is provided. The catalyst has a productivity of greater than 661 grams of vinyl acetate per hour per liter of catalyst at 150.degree. C. and consists essentially of: PA1 (1) a catalyst support having a particle diameter from about 3 to about 7 mm and a pore volume of 0.2 to 1.5 ml per gram PA1 (2) palladium and gold distributed in the outermost 1.0 mm thick layer of the catalyst support particles, and PA1 (3) from about 3.5 to 9.5% by weight of potassium acetate. The catalyst is characterized by having a gold to palladium weight ratio in the range 0.60 to 1.25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.