▎ 摘　　要

NOVELTY - Separation membrane (10) comprises a porous support (12), and a separation layer (11) formed on the porous support and containing a nanomaterial and an organosilica having a silsesquioxane structure. USE - The separation membrane is used for separating substances from mixed liquids and gases for dehydration. ADVANTAGE - The separation membrane has high permeability and selectivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing the separation member, involving preparing a coating sol containing a nanomaterial and an organosilica having a silsesquioxane structure, a coating the coating sol on a porous support, forming a film from the coating sol applied in the coating step by vacuum filtration or pressure filtration, and heat-treating the coating sol formed in the film-forming step to form a separation layer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of the separation membrane. 10Separation membrane 11Separation layer 12Support