Patent · US Active

Catalyst for the oxidation of SO2 to SO3

US8323610B2 · kind B2 · utility

3Cited by

7References

8Claims

0Family size

Assignee

BASF SE

Inventors

Michael Kramer · Muscatine, US
Markus Schubert · Ludwigshafen, DE
Thomas Lautensack · Altleiningen, DE
Thomas Hill · Ludwigshafen, DE
Reinhard Korner · Bischofswerda, DE
Frank Rosowski · Mannheim, DE
Jürgen Zühlke · Speyer, DE

Key dates

Filing date	Apr 12, 2011
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Apr 26, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J35/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a catalyst for the oxidation of SO2 to SO3. The catalyst contains an active substance which contains vanadium, alkali metal compounds and sulfate applied to a support. The support contains naturally occurring diatomaceous earth, wherein the support contains at least one relatively soft naturally occurring uncalcined diatomaceous earth which has a percentage reduction of at least 35% in its D50 value determined in a particle size determination according to the dry method in comparison with the wet method.

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