▎ 摘　　要

NOVELTY - A molecular sieve comprises a layer of perforated graphene or graphene-based material, provided on a polymer backing. USE - Molecular sieve is used as filter for separating water from aqueous solution, and methane, ethane, propane and butane from oil-gas mixture (all claimed). ADVANTAGE - The molecular sieve having excellent tear resistance and high adsorption capacity is manufactured efficiently with high productivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of molecular sieve, which involves growing graphene or graphene-based material on a growth substrate, applying polymer to the graphene or graphene-based material, removing the growth substrate from the graphene or graphene-based material, perforating the graphene or graphene-based material on the polymer, and forming a macrotube by winding the perforated graphene or graphene-based material and the polymer into a spiral shape; and (2) method for filtering using molecular sieve, which involves contacting a crude fluid with an interior or an exterior of the macrotube of the molecular sieve. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of graphene-based molecular sieve.