Microporous UZM-5 zeolitic inorganic membranes for gas separation vapors and liquids

摘要

1. A method of manufacturing a microporous UZM-5 zeolite membrane by crystallization in situ in the reaction mixture of one layer or several layers of crystals UZM-5 zeolite membrane on a porous substrate, comprising the steps of: (a) producing a porous membrane substrate; (b) synthesizing aqueous UZM-5 zeolite-forming gel by combining reactive sources of R, aluminum (Al), optionally E and / or M and silicon (Si) in an aqueous medium, the composition R, Al, E, F, Si and O with molar ratios of elements is: where M represents at least one exchangeable Catió n selected from the group consisting of alkali and alkaline earth metals, "m" is the mole ratio of M to (Al + E) and varies from 0 to 1, 2, R is a nitrogen-containing organic cation selected from the group consisting of protonated amines, protonated diamines, protonated alkanolamines, quaternary ammonium ions, diquaternary ammonium ions, quaternized alkanolamines and mixtures thereof, "r" is the mole ratio of r to (Al + E) and is 0.25-3.0, e is at least one element selected from the group consisting of Ga, Fe, Cr, In and B, "x" is the mole fraction of E and 0-0,5, "n" is the weighted average valence of M and has a value from +1 to +2, "p" is the weighted average valence of R and has a value from +1 to +2, "y" is the mole ratio of Si to (Al + E) and varies from 5 to 12 and "z" is the mole ratio of O to (Al + E) and has a value determined by the equation: z = (m · n + r · p + 3 + 4 · y) / 2; (c) aging UZM-5 zeolite-forming gel at 25-100 ° C for 1-120 hours to obtain an aged UZM-5 zeolite -formiruyuschego gel; (d) contacting at least one surface of the n