公开(公告)号：US10307741B2

公开(公告)日：2019-06-04

申请号：US15562019

申请日：2016-03-16

Applicant: BASF SE

Inventor： Philipp Grüne ,  Christian Walsdorff ,  Markus Schubert ,  Holger Borchert ,  Jacob Cornelis Van Dorland ,  Jürgen Zühlke ,  Stefan Lipp ,  Michael Krämer

IPC: B01J27/055 ,  B01J21/08 ,  B01J35/00 ,  B01J35/04 ,  B01J37/00 ,  B01J23/22 ,  B01J35/02 ,  B01J35/10 ,  C01B17/79

Abstract: The invention relates to shaped catalyst bodies for the oxidation of SO2 to SO3, which comprise vanadium, at least one alkali metal and sulfate on a silicon dioxide support material, wherein the shaped body has the shape of a cylinder having 3 or 4 hollow-cylindrical convexities, obtainable by extrusion of a catalyst precursor composition comprising vanadium, at least one alkali metal and sulfate on a silicon dioxide support material through the opening of an extrusion tool, wherein the opening of the extrusion tool has a cross section formed by 3 or 4 partly overlapping rings whose midpoints lie essentially on a circular line having a diameter of y, wherein the rings are bounded by an outer line lying on a circle having an external diameter x1 and an inner line lying on a circle having an internal diameter x2.