ZEOLITE MEMBRANE HAVING OXYGEN EIGHT-MEMBERED RINGS, METHOD FOR MANUFACTURING ZEOLITE MEMBRANE AND METHOD FOR EVALUATING ZEOLITE MEMBRANE HAVING OXYGEN EIGHT-MEMBERED RINGS

摘要

Provided is a zeolite membrane manufactured by: subjecting a porous body to heat treatment at 400° C. or more in the presence of oxygen as pretreatment, before adhering zeolite seed crystals to a surface of the porous body; storing the porous body under an environment of humidity of 30% or more for 12 hours or more after the heat treatment; and subsequently adhering the zeolite seed crystals to the porous body. The zeolite membrane having oxygen eight-membered rings, which is manufactured by subjecting the porous body to the heat treatment, provides a value that is obtained by dividing a permeance of CF4 by a permeance of CO2 to be 0.015 or less, and has fewer defects.

主权项

1. A zeolite membrane having oxygen eight-membered rings, wherein a value obtained by dividing a permeance of CF4 by a permeance of CO2 is 0.015 or less.