▎ 摘　　要

NOVELTY - Catalyst i.e. 1-methylpyrrolidine compound (I) is new. USE - The catalyst is useful for hydration reaction of epoxy alkane (claimed). ADVANTAGE - The catalyst has high heat resistance and swelling resistance, high activity, long service life, and easy separation of products after the reaction. DETAILED DESCRIPTION - Catalyst i.e. 1-methylpyrrolidine compound of formula (I) is new. T = nanocomposite resin matrix; R1 = 1-10C alkylene group or 6-20C arylene groups; R2 = H, 1-10C alkyl group or 6-20C aromatic group; and M- = anion. INDEPENDENT CLAIMS are also included for: (1) preparation of (I); and (2) preparing diols by hydration reaction of epoxy alkane, comprising reacting epoxy alkane with water in the presence of the catalyst.