▎ 摘　　要

NOVELTY - In-liquid substance separation membrane molded body comprises lamellar particles (A) comprising a quaternary ammonium ion (a) which has a total of 15-45C atoms and having one or two alkyl groups which have 10-20C atoms and an anion surfactant (b) which has an ammonium ion, have an average thickness of 0.7-100 nm, an average length of 50-10000 nm, and a (maximum length/width orthogonal to maximum length) ratio of 1-10, and are a separated layer substance formed by separating the layers of a layered compound, and a base material (B), where the lamellar particles (A) are an aqueous dispersion of the lamellar particles (A) comprising (a) and (b) for the separation of the layers of the layered compound. the 90% cumulative particle size value for a laser diffraction particle size distribution of the lamellar particles (A) of the aqueous dispersion is 1.5-10 times the average value for the particle size distribution. USE - As in-liquid substance separation membrane molded body. ADVANTAGE - The molded body efficiently removes substance to be separated in a liquid, has high chemical resistance due to the separation membrane component, high solvent permeation rate of the solution containing the substance to be separated in the membrane, and efficiently separates substances (eg, ionic organic substances) in a liquid. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing an in-liquid substance separation membrane molded body.