Patent · US Expired

Process for the preparation of vinyl acetate

US4902823A · kind A · utility

67Cited by

5References

3Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Friedrich Wunder · Flörsheim, DE
Gunter Roscher · Kelkheim, DE
Klaus Eichler · Laufenburg (Baden), DE

Key dates

Filing date	Feb 7, 1989
Grant date	Feb 20, 1990
Priority date	—
Expiry date	Feb 7, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J35/63
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a process for the preparation of vinyl acetate in the gas phase from ethylene, acetic acid and oxygen or oxygen-containing gases on a catalyst which contains palladium and/or compounds thereof and if appropriate additionally gold and/or gold compounds and, as activators, alkali metal compounds and if appropriate additionally cadmium compounds, on a support. The support consists of cylindrical particles with curved front faces. The support material is aerogenic SiO.sub.2 or an aerogenic SiO.sub.2 -Al.sub.2 O.sub.3 mixture having a surface area of 50-250 m.sup.2 /g and a pore volume of 0.4-1.2 ml/g, which is formed to the extent of at least 50% by pores having a diameter of 50-200 .ANG..

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.