公开(公告)号：US20180104674A1

公开(公告)日：2018-04-19

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

CPC classification number: B01J27/055 ,  B01J21/08 ,  B01J23/22 ,  B01J35/0006 ,  B01J35/0026 ,  B01J35/023 ,  B01J35/026 ,  B01J35/04 ,  B01J35/1004 ,  B01J37/0009 ,  B01J37/0018 ,  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.