Planar catalyst filling

A catalyst filling comprising:

• a first layer of a planar catalyst material and a second layer of a planar catalyst material disposed thereabove,
• wherein the catalyst material of the first layer comprises at least two plates that each abut one another while forming an abutment edge;
• wherein the catalyst material of the second layer comprises at least two plates that each abut one another while forming an abutment edge;
• and
• wherein the plates of the second layer are configured and/or arranged relative to the plates of the first layer that on a projection of the abutment edge(s) of the first layer and of the abutment edge(s) of the second layer into a common plane, no abutment edge of the first layer has more than one common point with an abutment edge of the second layer,
• wherein moldings are defined, each molding comprising at least one plate from the first layer and at least one plate from the second layer, wherein in each molding the at least one plate from the second layer is layered above the at least one plate from the first layer;
• wherein each of the first layer and the second layer comprises at least two plates from at least two moldings adjacent to one another so that said abutment edges are between plates of adjacent moldings;
• wherein each molding comprises a plurality of plates from the first layer and the second layer connected to one another in the form of a plate stack obliquely displaced in at least one direction,
• wherein the plates comprise metal foam,
• wherein the first layer and the second layer define a circular shape.