Patent · US Expired

Regeneration of spent multimetal oxide oxidation catalysts from the catalytic gas-phase oxidation of lower organic compounds

US5512525A · kind A · utility

12Cited by

8References

2Claims

0Family size

Assignee

BASF SE

Inventors

Andreas Tenten · Maikammer, DE
Ulrich Hammon · Mannheim, DE
Peter Weidlich · Mannheim, DE
Walter Doerflinger · Espelkamp, DE

Key dates

Filing date	Feb 1, 1994
Grant date	Apr 30, 1996
Priority date	—
Expiry date	Feb 1, 2014

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J38/62
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for regenerating spent multimetal oxide oxidation catalysts from the catalytic gas-phase oxidation of lower organic compounds and which, in fresh form, contain as basic constituents the elements Mo, W, V and Cu in oxidic form, by the action of oxidizing agents or means and solubilizing, aqueous ammonia to which acetic acid and/or the ammonium salt thereof has been added, with subsequent drying and calcination, comprises quantitatively determining the content of metallic constituents during the process and making this content up to the respective original value.

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