| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a porous body with a separation membrane, which has a high permeability rate as a whole porous body with the separation membrane even when having a plurality of tubular passages. <P>SOLUTION: A porous body with a separation membrane 1 includes a plurality of tubular passages 11 where the separation membrane having a separation function is formed at an inner wall of a through-hole provided at the porous body 12. At a cross section which is perpendicular to the longitudinal direction of the tubular passage, by making the cross section of the tubular passage located at the vicinity of the center of porous body smaller than the cross section of the tubular passage located at the vicinity of the outer circumferential porous body, a high permeability rate can be obtained as the whole porous body with the separation membrane. <P>COPYRIGHT: (C)2013,JPO&INPIT |
