Patent · US Active

Catalyst system and method for gas phase oxidation using an upstream layer

US8263789B2 · kind B2 · utility

2Cited by

8References

23Claims

0Family size

Assignee

BASF SE

Inventors

Hagen Wilmer · Ludwigshafen, DE
Jürgen Zühlke · Speyer, DE
Thomas Lautensack · Altleiningen, DE
Hans-Martin Allmann · Neunkirchen, DE
Frank Rosowski · Mannheim, DE
Cornelia Katharina Dobner · Ludwigshafen, DE

Key dates

Filing date	Dec 12, 2007
Grant date	Sep 11, 2012
Priority date	—
Expiry date	Apr 17, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2208/025
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.

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