Membrane for separating methane or carbon dioxide, and production thereof

Abstract

The present invention discloses a process for producing a membrane for separating methane or carbon dioxide, having excellent heat resistance, durability and anti-chemical agent resistance (anti-corrosion resistance). The present invention is related to a process for producing a membrane for separating methane or carbon dioxide, which comprises the following steps: (a) preparing a metal alkoxide solution by (i) mixing an acid catalyst, water and an organic solvent, (ii) adding thereto tetraalkoxysilane and mixing, and (iii) then adding thereto a hydrocarbon group-containing trialkoxysilane, of which a hydrocarbon group is selected from the group consisting of an alkyl group having 1 to 6 carbon atoms and a phenyl group, and mixing, (b) applying the metal alkoxide solution on an inorganic porous support, and then (c) calcining the inorganic porous support having metal alkoxide solution layer at a temperature of 30 to 300° C.

Dependencies are inferred from the claim text.