Patent ID: 8637416

Claim:
A method for manufacturing a zeolite membrane comprising: a surface layer forming step for forming a surface layer by attaching a low polar polymer having a solubility parameter (SP value) of 8.0 (cal/cm 3 ) 1/2 or less to a first surface of a porous substrate to cover the surface, a filling step for filling a high polar polymer having low compatibility with the low polar polymer and a SP value of above 8.0 (cal/cm 3 ) 1/2 as a masking polymer into pores in the porous substrate from a surface different from the first surface of the porous substrate up to the surface layer by impregnating the porous substrate with the high polar polymer and solidifying the high polar polymer, a surface layer removing step for removing the surface layer, a seed crystal attaching step for attaching a seed crystal functioning as a seed for forming a zeolite membrane on the first surface of the porous substrate where the surface layer has been removed, a membrane forming step for forming a dense zeolite membrane containing a structure directing agent on the first surface of the porous substrate by growing the seed crystal, and a removing step for removing the structure directing agent from the dense zeolite membrane and removing the masking polymer from the porous substrate.