Patent · US Expired

Regeneration of the Al.sub.2 O.sub.3 carrier material of a spent Ag/Al.sub.2 O.sub.3 supported catalysts

US4530910A · kind A · utility

8Cited by

4References

8Claims

0Family size

Assignee

BASF SE

Inventors

Wolf D. Mross · Bischofswerda, DE
Matthias Schwarzmann · Schifferstadt, DE
Juergen Plueckham · Bischofswerda, DE
Juergen Dehler · Forchheim, DE

Key dates

Filing date	Oct 20, 1983
Grant date	Jul 23, 1985
Priority date	—
Expiry date	Oct 20, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S502/503
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The Al.sub.2 O.sub.3 carrier material from Ag/Al.sub.2 O.sub.3 supported catalysts which is obtained after the silver has been removed from such spent catalysts in a conventional manner is regenerated by a method in which the carrier material PA0 (a) is treated with an aqueous solution of a water-soluble salt or hydroxide of a metal of group IIA, IIIB or IVB of the Periodic Table or of aluminum, copper, manganese, zinc, cadmium, tin or lead, and the material treated in this manner is then dried, and/or the material PA0 (b) is heated at 750-1,500.degree. C. for not less than 10 minutes.

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