Patent · US Active

Catalyst for preparing carboxylic acids and/or carboxylic anhydrides

US9029289B2 · kind B2 · utility

1Cited by

3References

5Claims

0Family size

Assignee

BASF SE

Inventors

Michael Kramer · Muscatine, US
Jürgen Zühlke · Speyer, DE
Stefan Altwasser · Monsheim, DE
Nico Fischer · Mannheim, DE
Frank Rosowski · Mannheim, DE
Hans-Martin Allmann · Neunkirchen, DE

Key dates

Filing date	Jul 16, 2013
Grant date	May 12, 2015
Priority date	—
Expiry date	Jul 16, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2523/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a catalyst for preparing carboxylic acids and/or carboxylic anhydrides, which has a plurality of catalyst zones arranged in series and has been produced using a vanadium antimonate having a maximum content of crystalline valentinite of 5% by weight. The present invention further relates to a process for gas-phase oxidation in which a gas stream comprising at least one hydrocarbon and molecular oxygen is passed through a catalyst which has a plurality of catalyst zones arranged in series and has been produced using a vanadium antimonate having a maximum content of crystalline valentinite of 5% by weight.

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