Patent ID: 8043988
Filing Date: 2011-10-25
Classification: B01D,B01J

Abstract:
1. A process for preparation of FAU-structural type supported membranes that comprises the following stages: stage a) preparation of a precursor of a FAU-structural type zeolite, said precursor being a gel precursor or a gel-suspension precursor, said precursor comprising at least one framework silicon source, at least one source of another framework element, at least one mineralizing agent, and at least one structuring organic compound, in which the molar composition of the gel or gel-suspension precursor is as follows: 1 SiO w, x, y and z that respectively represent molar ratios of: another-framework-element/silica, water/silica, soda/silica structuring-organic-compound/silica, whereby in which, before gelling, the gel precursor or the gel suspension precursor is provided in clear, liquid form, in which the precursor is prepared at a temperature of not more than 5° C.,