Exhaust gas cleaning catalyst with an axially varying precious metal concentration and processes for making the catalyst

The invention relates to a catalyzed the coating exhaust gas purification catalyst on the guide base. The honeycomb body is provided with a upstream end and downstream end and a ring the downstream end of the flow channels from upstream end. The catalyzed coating comprises a catalytic and noble metal element, at least a noble metal component displayed along the guide base along the density distributed honeycomb body, from the upstream end low concentration), wherein density increased along the flowing channel is the maximum value, then the downstream to a.