HONEYCOMB SHAPED POROUS CERAMIC BODY, MANUFACTURING METHOD FOR SAME, AND HONEYCOMB SHAPED CERAMIC SEPARATION MEMBRANE STRUCTURE

摘要

There are disclosed a honeycomb shaped porous ceramic body to manufacture a honeycomb shaped ceramic separation membrane structure in which a separation performance does not deteriorate under a higher operation pressure than before, a manufacturing method for the porous body, and a honeycomb shaped ceramic separation membrane structure. The honeycomb shaped ceramic separation membrane structure 1 includes a honeycomb shaped substrate 30, an intermediate layer 31, an alumina surface layer 32, and a separation layer 33. The structure has the alumina surface layer 32 on the intermediate layer 31, whereby even when the insides of the cells 4 are pressurized, cracks are not easily generated in a porous body 9 or the separation layer 33 and the deterioration of the separation performance does not easily occur.

主权项

1. A honeycomb shaped porous ceramic body comprising:
a honeycomb shaped substrate which has partition walls made of a porous ceramic material provided with a large number of pores and in which there are formed a plurality of cells to become through channels of a fluid passing through the porous ceramic body by the partition walls; an intermediate layer which is made of a porous ceramic material provided with a large number of pores and having an average pore diameter smaller than that of the surface of the substrate and which is disposed at the surface of the substrate; and an alumina-containing alumina surface layer at the outermost surface of the intermediate layer.