Patent ID: 7615273
Filing Date: 2009-11-10
Classification: B01D,B01J,C04B,F01N,Y02W,Y10T

Abstract:
1. A cell structure comprising: a cell structural portion having partition walls forming a plurality of cells extending from one end face to the other end face, and an outer wall portion disposed on an outer peripheral surface of the cell structural portion; wherein the outer wall portion has at least a porous layer having a porosity of 40% or more or a porous layer having a hollow body, wherein the outer wall portion has an inside shell layer located on the cell structural portion side and an outside shell layer located outside of the inside shell layer with the inside shell layer having a porosity higher than that of the outside shell layer, and wherein the cell structural portion contains a ceramic material or a metallic material as a main component, and the outer wall portion contains a ceramic material as a main component.