molecular sieve membrane technology

Molecular sieves are used as membrane materials for pervaporation membrane and their regular channels are used to separate different components. NaA type inorganic molecular sieve pervaporation membrane is NaA type molecular sieve particles on the tubular porous ceramic membrane support, through the crystal growth (growth) to form A layer of close packing layer of membrane, pore size is about 4.2 A, dynamics of diameter greater than water molecules (~ 2.9 A) and less than most of the organic molecular diameter, showed good shape-selective selectivity to water molecules; On the other hand, the high aluminum content (Si/Al=1) in the molecular sieve skeleton makes it extremely hydrophilic, making NaA inorganic molecular sieve pervaporation film particularly suitable for organic solvent dehydration.