Method for producing a core-shell catalyst
AssigneeBASF SE
InventorsSamira Parishan, Kazuhiko Amakawa, Ulrich Hammon, Christian Walsdorff, Necip Neseli, Markus Muehl
Life of this patent
Estimating the term…
Abstract
A process for producing an eggshell catalyst, comprising the coating of the outer surface of a geometric shaped support body with a catalytically active multielement oxide or a powder P, wherein the powder P, after being coated, is converted by thermal treatment to a catalytically active multielement oxide, and one or more liquid binders, wherein the coating is conducted in a horizontal mixer and the Froude number during the coating in the horizontal mixer is from 0.0160 to 0.1200.
Claims8
A process for producing an eggshell catalyst, comprising the coating of the outer surface of a geometric shaped support body with
- a) one or more catalytically active multielement oxides and one or more liquid binders, wherein the binder is removed later, or
- b) one or more powders P and one or more liquid binders, wherein the powders P, after the coating, is converted by thermal treatment to one or more catalytically active multielement oxides,
- wherein the coating is conducted in a horizontal mixer and the Froude number during the coating in the horizontal mixer is from 0.0040 to 0.1200,
- wherein the diameter of the mixing drum on the horizontal mixer is from 0.5 to 2.5 m,
- and wherein the length of the mixing drum of the horizontal mixer is from 0.25 to 1.5 m.
Dependencies are inferred from the claim text.