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A process for the production of a composite membrane, one or more microporous separation layers comprising a zeolite of the MFI type being produced by hydrothermal synthesis on a porous substrate, wherein one or more additives from the group consisting of linear (C1-C4)-alcohols, ammonia, primary, s

A process for the production of a composite membrane, one or more microporous separation layers comprising a zeolite of the MFI type being produced by hydrothermal synthesis on a porous substrate, wherein one or more additives from the group consisting of linear (C1-C4)-alcohols, ammonia, primary, secondary and tertiary amines having in each case (C1-C4)-alkyl radicals, (C1-C4)-aminoalcohols and (C3-C4)-ketones are added to the synthesis solution for the hydrothermal synthesis.

대표청구항 ▼

1. A process for the production of a composite membrane comprising at least one microporous separation layer comprising a zeolite of the MFI type on a porous substrate, comprising: contacting a surface of the porous substrate in a hydrothermal treatment with a synthesis solution comprising at least

1. A process for the production of a composite membrane comprising at least one microporous separation layer comprising a zeolite of the MFI type on a porous substrate, comprising: contacting a surface of the porous substrate in a hydrothermal treatment with a synthesis solution comprising at least one additive selected from the group consisting of linear (C1-C4)-alcohols, ammonia, primary, secondary and tertiary amines having in each case (C1-C4)-alkyl radicals, ethanolamine and (C3-C4)-ketones are added to the synthesis solution for the hydrothermal synthesis, wherein the synthesis solution has the following molar constituents, with A being said at least one additive:SiO2/Al2O3/Na2O/TPAOH/TPABr/H2O/A=1/5×10−5 to 5×10−2 /from 0 to 0.2/from 0.03 to 0.08/from 0.03 to 0.08/from (10−y) to (100−y)/ywith 0